id	sid	tid	token	lemma	pos
gra-842	1	1	introduction	introduction	NOUN
gra-842	1	2	lesions	lesion	NOUN
gra-842	1	3	within	within	ADP
gra-842	1	4	the	the	DET
gra-842	1	5	retrorectal	retrorectal	NOUN
gra-842	1	6	,	,	PUNCT
gra-842	1	7	or	or	CCONJ
gra-842	1	8	presacral	presacral	ADJ
gra-842	1	9	,	,	PUNCT
gra-842	1	10	space	space	NOUN
gra-842	1	11	are	be	AUX
gra-842	1	12	uncommon	uncommon	ADJ
gra-842	1	13	and	and	CCONJ
gra-842	1	14	therefore	therefore	ADV
gra-842	1	15	present	present	VERB
gra-842	1	16	a	a	DET
gra-842	1	17	challenge	challenge	NOUN
gra-842	1	18	to	to	PART
gra-842	1	19	diagnose	diagnose	VERB
gra-842	1	20	and	and	CCONJ
gra-842	1	21	manage	manage	VERB
gra-842	1	22	.	.	PUNCT
gra-842	2	1	although	although	SCONJ
gra-842	2	2	retrorectal	retrorectal	ADJ
gra-842	2	3	tumors	tumor	NOUN
gra-842	2	4	are	be	AUX
gra-842	2	5	estimated	estimate	VERB
gra-842	2	6	to	to	PART
gra-842	2	7	account	account	VERB
gra-842	2	8	for	for	ADP
gra-842	2	9	approximately	approximately	ADV
gra-842	2	10	1	1	NUM
gra-842	2	11	in	in	ADP
gra-842	2	12	40,000	40,000	NUM
gra-842	2	13	hospital	hospital	NOUN
gra-842	2	14	admissions	admission	NOUN
gra-842	2	15	,	,	PUNCT
gra-842	2	16	the	the	DET
gra-842	2	17	true	true	ADJ
gra-842	2	18	incidence	incidence	NOUN
gra-842	2	19	in	in	ADP
gra-842	2	20	the	the	DET
gra-842	2	21	general	general	ADJ
gra-842	2	22	population	population	NOUN
gra-842	2	23	is	be	AUX
gra-842	2	24	unknown	unknown	ADJ
gra-842	2	25	.	.	PUNCT
gra-842	3	1	the	the	DET
gra-842	3	2	retrorectal	retrorectal	ADJ
gra-842	3	3	space	space	NOUN
gra-842	3	4	contains	contain	VERB
gra-842	3	5	embryologic	embryologic	ADJ
gra-842	3	6	remnants	remnant	NOUN
gra-842	3	7	that	that	PRON
gra-842	3	8	have	have	VERB
gra-842	3	9	pluripotent	pluripotent	ADJ
gra-842	3	10	capability	capability	NOUN
gra-842	3	11	;	;	PUNCT
gra-842	3	12	hence	hence	ADV
gra-842	3	13	,	,	PUNCT
gra-842	3	14	a	a	DET
gra-842	3	15	heterogeneous	heterogeneous	ADJ
gra-842	3	16	histologic	histologic	NOUN
gra-842	3	17	(	(	PUNCT
gra-842	3	18	1)group	1)group	NUM
gra-842	3	19	of	of	ADP
gra-842	3	20	tumors	tumor	NOUN
gra-842	3	21	arise	arise	VERB
gra-842	3	22	in	in	ADP
gra-842	3	23	this	this	DET
gra-842	3	24	region	region	NOUN
gra-842	3	25	.	.	PUNCT
gra-842	4	1	lesions	lesion	NOUN
gra-842	4	2	may	may	AUX
gra-842	4	3	be	be	AUX
gra-842	4	4	solid	solid	ADJ
gra-842	4	5	or	or	CCONJ
gra-842	4	6	cystic	cystic	ADJ
gra-842	4	7	,	,	PUNCT
gra-842	4	8	the	the	DET
gra-842	4	9	solid	solid	ADJ
gra-842	4	10	variety	variety	NOUN
gra-842	4	11	having	have	VERB
gra-842	4	12	a	a	DET
gra-842	4	13	higher	high	ADJ
gra-842	4	14	predilection	predilection	NOUN
gra-842	4	15	for	for	ADP
gra-842	4	16	malignancy	malignancy	NOUN
gra-842	4	17	.	.	PUNCT
gra-842	5	1	surgical	surgical	ADJ
gra-842	5	2	resection	resection	NOUN
gra-842	5	3	is	be	AUX
gra-842	5	4	the	the	DET
gra-842	5	5	principal	principal	ADJ
gra-842	5	6	therapy	therapy	NOUN
gra-842	5	7	for	for	ADP
gra-842	5	8	retrorectal	retrorectal	ADJ
gra-842	5	9	tumors	tumor	NOUN
gra-842	5	10	.	.	PUNCT
gra-842	6	1	even	even	ADV
gra-842	6	2	benign	benign	ADJ
gra-842	6	3	cystic	cystic	ADJ
gra-842	6	4	lesions	lesion	NOUN
gra-842	6	5	are	be	AUX
gra-842	6	6	excised	excise	VERB
gra-842	6	7	because	because	SCONJ
gra-842	6	8	doing	do	VERB
gra-842	6	9	so	so	ADV
gra-842	6	10	eliminates	eliminate	NOUN
gra-842	6	11	or	or	CCONJ
gra-842	6	12	prevents	prevent	VERB
gra-842	6	13	symptoms	symptom	NOUN
gra-842	6	14	and	and	CCONJ
gra-842	6	15	addresses	address	VERB
gra-842	6	16	the	the	DET
gra-842	6	17	risks	risk	NOUN
gra-842	6	18	of	of	ADP
gra-842	6	19	subsequent	subsequent	ADJ
gra-842	6	20	infection	infection	NOUN
gra-842	6	21	or	or	CCONJ
gra-842	6	22	malignant	malignant	ADJ
gra-842	6	23	transformation	transformation	NOUN
gra-842	6	24	.	.	PUNCT
gra-842	7	1	ct	ct	PROPN
gra-842	7	2	and	and	CCONJ
gra-842	7	3	mri	mri	NOUN
gra-842	7	4	have	have	AUX
gra-842	7	5	been	be	AUX
gra-842	7	6	found	find	VERB
gra-842	7	7	effective	effective	ADJ
gra-842	7	8	for	for	ADP
gra-842	7	9	differentiating	differentiate	VERB
gra-842	7	10	benign	benign	NOUN
gra-842	7	11	from	from	ADP
gra-842	7	12	malignant	malignant	ADJ
gra-842	7	13	entities	entity	NOUN
gra-842	7	14	.	.	PUNCT
gra-842	8	1	ct	ct	PRON
gra-842	8	2	or	or	CCONJ
gra-842	8	3	mri	mri	NOUN
gra-842	8	4	can	can	AUX
gra-842	8	5	be	be	AUX
gra-842	8	6	used	use	VERB
gra-842	8	7	for	for	ADP
gra-842	8	8	surgical	surgical	ADJ
gra-842	8	9	planning	planning	NOUN
gra-842	8	10	because	because	SCONJ
gra-842	8	11	the	the	DET
gra-842	8	12	size	size	NOUN
gra-842	8	13	and	and	CCONJ
gra-842	8	14	extent	extent	NOUN
gra-842	8	15	of	of	ADP
gra-842	8	16	the	the	DET
gra-842	8	17	tumor	tumor	NOUN
gra-842	8	18	can	can	AUX
gra-842	8	19	be	be	AUX
gra-842	8	20	delineated	delineate	VERB
gra-842	8	21	,	,	PUNCT
gra-842	8	22	and	and	CCONJ
gra-842	8	23	the	the	DET
gra-842	8	24	presence	presence	NOUN
gra-842	8	25	of	of	ADP
gra-842	8	26	local	local	ADJ
gra-842	8	27	invasion	invasion	NOUN
gra-842	8	28	can	can	AUX
gra-842	8	29	be	be	AUX
gra-842	8	30	assessed	assess	VERB
gra-842	8	31	with	with	ADP
gra-842	8	32	either	either	DET
gra-842	8	33	modality	modality	NOUN
gra-842	8	34	.	.	PUNCT
gra-842	9	1	retrorectal	retrorectal	ADJ
gra-842	9	2	lesions	lesion	NOUN
gra-842	9	3	can	can	AUX
gra-842	9	4	be	be	AUX
gra-842	9	5	resected	resect	VERB
gra-842	9	6	via	via	ADP
gra-842	9	7	one	one	NUM
gra-842	9	8	of	of	ADP
gra-842	9	9	three	three	NUM
gra-842	9	10	approaches	approach	NOUN
gra-842	9	11	:	:	PUNCT
gra-842	9	12	anterior	anterior	ADJ
gra-842	9	13	(	(	PUNCT
gra-842	9	14	abdominal	abdominal	ADJ
gra-842	9	15	)	)	PUNCT
gra-842	9	16	,	,	PUNCT
gra-842	9	17	posterior	posterior	ADJ
gra-842	9	18	(	(	PUNCT
gra-842	9	19	perineal	perineal	NOUN
gra-842	9	20	)	)	PUNCT
gra-842	9	21	,	,	PUNCT
gra-842	9	22	or	or	CCONJ
gra-842	9	23	combined	combine	VERB
gra-842	9	24	.	.	PUNCT
gra-842	10	1	(	(	PUNCT
gra-842	10	2	2)anatomy	2)anatomy	NUM
gra-842	10	3	:	:	PUNCT
gra-842	10	4	anatomically	anatomically	ADV
gra-842	10	5	,	,	PUNCT
gra-842	10	6	the	the	DET
gra-842	10	7	retrorectal	retrorectal	ADJ
gra-842	10	8	space	space	NOUN
gra-842	10	9	is	be	AUX
gra-842	10	10	the	the	DET
gra-842	10	11	pelvic	pelvic	ADJ
gra-842	10	12	continuation	continuation	NOUN
gra-842	10	13	of	of	ADP
gra-842	10	14	the	the	DET
gra-842	10	15	retroperitoneum	retroperitoneum	NOUN
gra-842	10	16	.	.	PUNCT
gra-842	11	1	in	in	ADP
gra-842	11	2	adults	adult	NOUN
gra-842	11	3	,	,	PUNCT
gra-842	11	4	this	this	DET
gra-842	11	5	space	space	NOUN
gra-842	11	6	is	be	AUX
gra-842	11	7	lled	lle	VERB
gra-842	11	8	with	with	ADP
gra-842	11	9	loose	loose	ADJ
gra-842	11	10	areolar	areolar	ADJ
gra-842	11	11	tissue	tissue	NOUN
gra-842	11	12	,	,	PUNCT
gra-842	11	13	fat	fat	ADJ
gra-842	11	14	,	,	PUNCT
gra-842	11	15	and	and	CCONJ
gra-842	11	16	connective	connective	ADJ
gra-842	11	17	tissues	tissue	NOUN
gra-842	11	18	.	.	PUNCT
gra-842	12	1	its	its	PRON
gra-842	12	2	boundaries	boundary	NOUN
gra-842	12	3	are	be	AUX
gra-842	12	4	the	the	DET
gra-842	12	5	rectum	rectum	NOUN
gra-842	12	6	anteriorly	anteriorly	NOUN
gra-842	12	7	and	and	CCONJ
gra-842	12	8	the	the	DET
gra-842	12	9	sacrum	sacrum	NOUN
gra-842	12	10	and	and	CCONJ
gra-842	12	11	investing	invest	VERB
gra-842	12	12	sacral	sacral	ADJ
gra-842	12	13	fascia	fascia	NOUN
gra-842	12	14	posteriorly	posteriorly	NOUN
gra-842	12	15	.	.	PUNCT
gra-842	13	1	although	although	SCONJ
gra-842	13	2	the	the	DET
gra-842	13	3	rectosacral	rectosacral	ADJ
gra-842	13	4	(	(	PUNCT
gra-842	13	5	waldeyer	waldeyer	NOUN
gra-842	13	6	's	's	PART
gra-842	13	7	)	)	PUNCT
gra-842	13	8	fascia	fascia	NOUN
gra-842	13	9	separates	separate	VERB
gra-842	13	10	the	the	DET
gra-842	13	11	true	true	ADJ
gra-842	13	12	retrorectal	retrorectal	ADJ
gra-842	13	13	space	space	NOUN
gra-842	13	14	from	from	ADP
gra-842	13	15	the	the	DET
gra-842	13	16	more	more	ADV
gra-842	13	17	inferior	inferior	ADJ
gra-842	13	18	/	/	SYM
gra-842	13	19	caudal	caudal	NOUN
gra-842	13	20	horseshoe	horseshoe	NOUN
gra-842	13	21	-	-	PUNCT
gra-842	13	22	shaped	shape	VERB
gra-842	13	23	supralevator	supralevator	NOUN
gra-842	13	24	space	space	NOUN
gra-842	13	25	,	,	PUNCT
gra-842	13	26	lesions	lesion	NOUN
gra-842	13	27	in	in	ADP
gra-842	13	28	both	both	DET
gra-842	13	29	regions	region	NOUN
gra-842	13	30	are	be	AUX
gra-842	13	31	typically	typically	ADV
gra-842	13	32	considered	consider	VERB
gra-842	13	33	together	together	ADV
gra-842	13	34	,	,	PUNCT
gra-842	13	35	with	with	ADP
gra-842	13	36	the	the	DET
gra-842	13	37	levator	levator	NOUN
gra-842	13	38	and	and	CCONJ
gra-842	13	39	coccygeal	coccygeal	ADJ
gra-842	13	40	musculature	musculature	NOUN
gra-842	13	41	constituting	constitute	VERB
gra-842	13	42	the	the	DET
gra-842	13	43	inferior	inferior	ADJ
gra-842	13	44	boundary	boundary	NOUN
gra-842	13	45	.	.	PUNCT
gra-842	14	1	the	the	DET
gra-842	14	2	ureters	ureter	NOUN
gra-842	14	3	,	,	PUNCT
gra-842	14	4	internal	internal	ADJ
gra-842	14	5	iliac	iliac	NOUN
gra-842	14	6	arteries	artery	NOUN
gra-842	14	7	,	,	PUNCT
gra-842	14	8	and	and	CCONJ
gra-842	14	9	lateral	lateral	ADJ
gra-842	14	10	rectal	rectal	ADJ
gra-842	14	11	stalks	stalk	NOUN
gra-842	14	12	mark	mark	VERB
gra-842	14	13	the	the	DET
gra-842	14	14	lateral	lateral	ADJ
gra-842	14	15	extent	extent	NOUN
gra-842	14	16	of	of	ADP
gra-842	14	17	the	the	DET
gra-842	14	18	retrorectal	retrorectal	ADJ
gra-842	14	19	space	space	NOUN
gra-842	14	20	,	,	PUNCT
gra-842	14	21	and	and	CCONJ
gra-842	14	22	it	it	PRON
gra-842	14	23	extends	extend	VERB
gra-842	14	24	cranially	cranially	ADV
gra-842	14	25	to	to	ADP
gra-842	14	26	the	the	DET
gra-842	14	27	peritoneal	peritoneal	ADJ
gra-842	14	28	reection	reection	NOUN
gra-842	14	29	.	.	PUNCT
gra-842	15	1	various	various	ADJ
gra-842	15	2	classication	classication	NOUN
gra-842	15	3	schemes	scheme	NOUN
gra-842	15	4	have	have	AUX
gra-842	15	5	been	be	AUX
gra-842	15	6	reported	report	VERB
gra-842	15	7	for	for	ADP
gra-842	15	8	retrorectal	retrorectal	ADJ
gra-842	15	9	tumors	tumor	NOUN
gra-842	15	10	.	.	PUNCT
gra-842	16	1	most	most	ADV
gra-842	16	2	commonly	commonly	ADV
gra-842	16	3	,	,	PUNCT
gra-842	16	4	these	these	DET
gra-842	16	5	tumors	tumor	NOUN
gra-842	16	6	are	be	AUX
gra-842	16	7	broadly	broadly	ADV
gra-842	16	8	categorized	categorize	VERB
gra-842	16	9	as	as	ADP
gra-842	16	10	inammatory	inammatory	ADJ
gra-842	16	11	,	,	PUNCT
gra-842	16	12	congenital	congenital	ADJ
gra-842	16	13	,	,	PUNCT
gra-842	16	14	neurogenic	neurogenic	ADJ
gra-842	16	15	,	,	PUNCT
gra-842	16	16	osseous	osseous	ADJ
gra-842	16	17	,	,	PUNCT
gra-842	16	18	and	and	CCONJ
gra-842	16	19	miscellaneous	miscellaneous	ADJ
gra-842	16	20	(	(	PUNCT
gra-842	16	21	table	table	NOUN
gra-842	16	22	1	1	NUM
gra-842	16	23	)	)	PUNCT
gra-842	16	24	.	.	PUNCT
gra-842	17	1	(	(	PUNCT
gra-842	17	2	3)table	3)table	NUM
gra-842	17	3	1	1	NUM
gra-842	17	4	.	.	X
gra-842	17	5	classication	classication	NOUN
gra-842	17	6	of	of	ADP
gra-842	17	7	retrorectal	retrorectal	ADJ
gra-842	17	8	tumors	tumor	NOUN
gra-842	17	9	.	.	PUNCT
gra-842	18	1	case	case	NOUN
gra-842	18	2	presentation	presentation	NOUN
gra-842	18	3	:	:	PUNCT
gra-842	18	4	a	a	DET
gra-842	18	5	20year	20year	NUM
gra-842	18	6	old	old	ADJ
gra-842	18	7	female	female	NOUN
gra-842	18	8	presented	present	VERB
gra-842	18	9	at	at	ADP
gra-842	18	10	outpatient	outpatient	NOUN
gra-842	18	11	clinic	clinic	NOUN
gra-842	18	12	with	with	ADP
gra-842	18	13	complaint	complaint	NOUN
gra-842	18	14	of	of	ADP
gra-842	18	15	bowel	bowel	NOUN
gra-842	18	16	disturbance	disturbance	NOUN
gra-842	18	17	and	and	CCONJ
gra-842	18	18	lower	low	ADJ
gra-842	18	19	abdominal	abdominal	ADJ
gra-842	18	20	pain	pain	NOUN
gra-842	18	21	since	since	SCONJ
gra-842	18	22	5	5	NUM
gra-842	18	23	days	day	NOUN
gra-842	18	24	.	.	PUNCT
gra-842	19	1	per	per	ADP
gra-842	19	2	abdomen	abdomen	NOUN
gra-842	19	3	examination	examination	NOUN
gra-842	19	4	was	be	AUX
gra-842	19	5	normal	normal	ADJ
gra-842	19	6	,	,	PUNCT
gra-842	19	7	digital	digital	ADJ
gra-842	19	8	rectal	rectal	ADJ
gra-842	19	9	examination	examination	NOUN
gra-842	19	10	did	do	AUX
gra-842	19	11	not	not	PART
gra-842	19	12	reveal	reveal	VERB
gra-842	19	13	any	any	DET
gra-842	19	14	enlarged	enlarged	ADJ
gra-842	19	15	hemorrhoids	hemorrhoid	NOUN
gra-842	19	16	or	or	CCONJ
gra-842	19	17	mass	mass	PROPN
gra-842	19	18	.	.	PUNCT
gra-842	20	1	usg	usg	PROPN
gra-842	20	2	abdomen	abdomen	PROPN
gra-842	20	3	was	be	AUX
gra-842	20	4	done	do	VERB
gra-842	20	5	showed	show	VERB
gra-842	20	6	37	37	NUM
gra-842	20	7	*	*	SYM
gra-842	20	8	34	34	NUM
gra-842	20	9	mm	mm	NOUN
gra-842	20	10	sized	size	VERB
gra-842	20	11	hypoechoic	hypoechoic	ADJ
gra-842	20	12	lesion	lesion	NOUN
gra-842	20	13	without	without	ADP
gra-842	20	14	signicant	signicant	ADJ
gra-842	20	15	vascularity	vascularity	NOUN
gra-842	20	16	in	in	ADP
gra-842	20	17	pelvis	pelvi	NOUN
gra-842	20	18	displacing	displace	VERB
gra-842	20	19	the	the	DET
gra-842	20	20	rectum	rectum	NOUN
gra-842	20	21	right	right	ADV
gra-842	20	22	laterally	laterally	ADV
gra-842	20	23	.	.	PUNCT
gra-842	21	1	all	all	DET
gra-842	21	2	routine	routine	ADJ
gra-842	21	3	blood	blood	NOUN
gra-842	21	4	investigations	investigation	NOUN
gra-842	21	5	were	be	AUX
gra-842	21	6	within	within	ADP
gra-842	21	7	normal	normal	ADJ
gra-842	21	8	limits	limit	NOUN
gra-842	21	9	and	and	CCONJ
gra-842	21	10	stool	stool	NOUN
gra-842	21	11	routine	routine	ADJ
gra-842	21	12	and	and	CCONJ
gra-842	21	13	culture	culture	NOUN
gra-842	21	14	examination	examination	NOUN
gra-842	21	15	were	be	AUX
gra-842	21	16	also	also	ADV
gra-842	21	17	normal	normal	ADJ
gra-842	21	18	.	.	PUNCT
gra-842	22	1	cect	cect	ADJ
gra-842	22	2	abdomen	abdoman	NOUN
gra-842	22	3	and	and	CCONJ
gra-842	22	4	pelvis	pelvis	NOUN
gra-842	22	5	was	be	AUX
gra-842	22	6	done	do	VERB
gra-842	22	7	which	which	PRON
gra-842	22	8	revealed	reveal	VERB
gra-842	22	9	approx	approx	PROPN
gra-842	22	10	41	41	NUM
gra-842	22	11	*	*	NUM
gra-842	22	12	50	50	NUM
gra-842	22	13	*	*	SYM
gra-842	22	14	80	80	NUM
gra-842	22	15	mm	mm	NOUN
gra-842	22	16	sized	sized	ADJ
gra-842	22	17	lobulated	lobulate	VERB
gra-842	22	18	soft	soft	ADJ
gra-842	22	19	tissue	tissue	NOUN
gra-842	22	20	density	density	NOUN
gra-842	22	21	lesion	lesion	NOUN
gra-842	22	22	showing	show	VERB
gra-842	22	23	homogenous	homogenous	ADJ
gra-842	22	24	enhancement	enhancement	NOUN
gra-842	22	25	deep	deep	ADJ
gra-842	22	26	to	to	ADP
gra-842	22	27	the	the	DET
gra-842	22	28	natal	natal	ADJ
gra-842	22	29	cleft	cleft	NOUN
gra-842	22	30	anterior	anterior	ADJ
gra-842	22	31	to	to	ADP
gra-842	22	32	coccyx	coccyx	NOUN
gra-842	22	33	in	in	ADP
gra-842	22	34	midline	midline	NOUN
gra-842	22	35	reaching	reach	VERB
gra-842	22	36	upto	upto	NOUN
gra-842	22	37	left	leave	VERB
gra-842	22	38	mesorectum	mesorectum	PROPN
gra-842	22	39	retrorectal	retrorectal	ADJ
gra-842	22	40	tumor	tumor	NOUN
gra-842	22	41	:	:	PUNCT
gra-842	22	42	a	a	DET
gra-842	22	43	rare	rare	ADJ
gra-842	22	44	entity	entity	NOUN
gra-842	22	45	original	original	ADJ
gra-842	22	46	research	research	NOUN
gra-842	22	47	paper	paper	PROPN
gra-842	22	48	dr	dr	PROPN
gra-842	22	49	.	.	PROPN
gra-842	22	50	mayur	mayur	PROPN
gra-842	22	51	.	.	PUNCT
gra-842	23	1	g.	g.	PROPN
gra-842	23	2	rabari	rabari	ADJ
gra-842	23	3	assistant	assistant	NOUN
gra-842	23	4	professor	professor	NOUN
gra-842	23	5	,	,	PUNCT
gra-842	23	6	department	department	NOUN
gra-842	23	7	of	of	ADP
gra-842	23	8	general	general	ADJ
gra-842	23	9	surgery	surgery	NOUN
gra-842	23	10	,	,	PUNCT
gra-842	23	11	svpimsr	svpimsr	PROPN
gra-842	23	12	,	,	PUNCT
gra-842	23	13	ahmedabad	ahmedabad	PROPN
gra-842	23	14	.	.	PUNCT
gra-842	24	1	x	x	PROPN
gra-842	24	2	25gjra	25gjra	NUM
gra-842	24	3	global	global	ADJ
gra-842	24	4	journal	journal	NOUN
gra-842	24	5	for	for	ADP
gra-842	24	6	research	research	NOUN
gra-842	24	7	analysis	analysis	NOUN
gra-842	24	8	general	general	ADJ
gra-842	24	9	surgery	surgery	NOUN
gra-842	24	10	introduction	introduction	NOUN
gra-842	24	11	:	:	PUNCT
gra-842	24	12	primary	primary	ADJ
gra-842	24	13	neoplasms	neoplasm	NOUN
gra-842	24	14	of	of	ADP
gra-842	24	15	the	the	DET
gra-842	24	16	retrorectal	retrorectal	PROPN
gra-842	24	17	(	(	PUNCT
gra-842	24	18	presacral	presacral	ADJ
gra-842	24	19	)	)	PUNCT
gra-842	24	20	space	space	NOUN
gra-842	24	21	are	be	AUX
gra-842	24	22	very	very	ADV
gra-842	24	23	rare	rare	ADJ
gra-842	24	24	.	.	PUNCT
gra-842	25	1	these	these	DET
gra-842	25	2	lesions	lesion	NOUN
gra-842	25	3	may	may	AUX
gra-842	25	4	be	be	AUX
gra-842	25	5	congenital	congenital	ADJ
gra-842	25	6	or	or	CCONJ
gra-842	25	7	acquired	acquire	VERB
gra-842	25	8	,	,	PUNCT
gra-842	25	9	benign	benign	ADJ
gra-842	25	10	or	or	CCONJ
gra-842	25	11	malignant	malignant	ADJ
gra-842	25	12	.	.	PUNCT
gra-842	26	1	they	they	PRON
gra-842	26	2	often	often	ADV
gra-842	26	3	arise	arise	VERB
gra-842	26	4	with	with	ADP
gra-842	26	5	subtle	subtle	ADJ
gra-842	26	6	clinical	clinical	ADJ
gra-842	26	7	symptoms	symptom	NOUN
gra-842	26	8	,	,	PUNCT
gra-842	26	9	or	or	CCONJ
gra-842	26	10	they	they	PRON
gra-842	26	11	may	may	AUX
gra-842	26	12	be	be	AUX
gra-842	26	13	found	find	VERB
gra-842	26	14	incidentally	incidentally	ADV
gra-842	26	15	during	during	ADP
gra-842	26	16	evaluation	evaluation	NOUN
gra-842	26	17	for	for	ADP
gra-842	26	18	other	other	ADJ
gra-842	26	19	conditions	condition	NOUN
gra-842	26	20	.	.	PUNCT
gra-842	27	1	preoperative	preoperative	ADJ
gra-842	27	2	imaging	imaging	NOUN
gra-842	27	3	can	can	AUX
gra-842	27	4	provide	provide	VERB
gra-842	27	5	useful	useful	ADJ
gra-842	27	6	information	information	NOUN
gra-842	27	7	for	for	ADP
gra-842	27	8	operative	operative	ADJ
gra-842	27	9	planning	planning	NOUN
gra-842	27	10	,	,	PUNCT
gra-842	27	11	however	however	ADV
gra-842	27	12	,	,	PUNCT
gra-842	27	13	it	it	PRON
gra-842	27	14	does	do	AUX
gra-842	27	15	not	not	PART
gra-842	27	16	replace	replace	VERB
gra-842	27	17	ndings	nding	NOUN
gra-842	27	18	for	for	ADP
gra-842	27	19	surgery	surgery	NOUN
gra-842	27	20	.	.	PUNCT
gra-842	28	1	approaches	approach	NOUN
gra-842	28	2	for	for	ADP
gra-842	28	3	resection	resection	NOUN
gra-842	28	4	include	include	VERB
gra-842	28	5	posterior	posterior	NOUN
gra-842	28	6	only	only	ADV
gra-842	28	7	and	and	CCONJ
gra-842	28	8	combined	combined	ADJ
gra-842	28	9	abdominoperineal	abdominoperineal	NOUN
gra-842	28	10	,	,	PUNCT
gra-842	28	11	depending	depend	VERB
gra-842	28	12	on	on	ADP
gra-842	28	13	the	the	DET
gra-842	28	14	characteristics	characteristic	NOUN
gra-842	28	15	of	of	ADP
gra-842	28	16	the	the	DET
gra-842	28	17	lesion	lesion	NOUN
gra-842	28	18	.	.	PUNCT
gra-842	29	1	case	case	NOUN
gra-842	29	2	presentation	presentation	NOUN
gra-842	29	3	:	:	PUNCT
gra-842	29	4	a	a	DET
gra-842	29	5	case	case	NOUN
gra-842	29	6	of	of	ADP
gra-842	29	7	20	20	NUM
gra-842	29	8	years	year	NOUN
gra-842	29	9	old	old	ADJ
gra-842	29	10	female	female	NOUN
gra-842	29	11	,	,	PUNCT
gra-842	29	12	presented	present	VERB
gra-842	29	13	in	in	ADP
gra-842	29	14	outpatient	outpatient	NOUN
gra-842	29	15	clinic	clinic	NOUN
gra-842	29	16	with	with	ADP
gra-842	29	17	bowel	bowel	NOUN
gra-842	29	18	disturbance	disturbance	NOUN
gra-842	29	19	and	and	CCONJ
gra-842	29	20	lower	low	ADJ
gra-842	29	21	abdominal	abdominal	ADJ
gra-842	29	22	pain	pain	NOUN
gra-842	29	23	.	.	PUNCT
gra-842	30	1	investigations	investigation	NOUN
gra-842	30	2	were	be	AUX
gra-842	30	3	done	do	VERB
gra-842	30	4	including	include	VERB
gra-842	30	5	contrast	contrast	NOUN
gra-842	30	6	enhanced	enhance	VERB
gra-842	30	7	computed	compute	VERB
gra-842	30	8	tomography	tomography	NOUN
gra-842	30	9	(	(	PUNCT
gra-842	30	10	ct)and	ct)and	NOUN
gra-842	30	11	magnetic	magnetic	ADJ
gra-842	30	12	resonance	resonance	NOUN
gra-842	30	13	imaging	imaging	NOUN
gra-842	30	14	(	(	PUNCT
gra-842	30	15	mri	mri	NOUN
gra-842	30	16	)	)	PUNCT
gra-842	30	17	of	of	ADP
gra-842	30	18	whole	whole	ADJ
gra-842	30	19	abdomen	abdoman	NOUN
gra-842	30	20	and	and	CCONJ
gra-842	30	21	pelvis	pelvi	NOUN
gra-842	30	22	which	which	PRON
gra-842	30	23	revealed	reveal	VERB
gra-842	30	24	ill	ill	ADV
gra-842	30	25	dened	dene	VERB
gra-842	30	26	heterogenously	heterogenously	ADV
gra-842	30	27	enhancing	enhance	VERB
gra-842	30	28	mass	mass	NOUN
gra-842	30	29	in	in	ADP
gra-842	30	30	retrorectal	retrorectal	ADJ
gra-842	30	31	space	space	NOUN
gra-842	30	32	;	;	PUNCT
gra-842	30	33	followed	follow	VERB
gra-842	30	34	by	by	ADP
gra-842	30	35	which	which	DET
gra-842	30	36	patient	patient	NOUN
gra-842	30	37	was	be	AUX
gra-842	30	38	taken	take	VERB
gra-842	30	39	for	for	ADP
gra-842	30	40	surgery	surgery	NOUN
gra-842	30	41	and	and	CCONJ
gra-842	30	42	biopsy	biopsy	NOUN
gra-842	30	43	taken	take	VERB
gra-842	30	44	.	.	PUNCT
gra-842	31	1	conclusion	conclusion	NOUN
gra-842	31	2	:	:	PUNCT
gra-842	31	3	retrorectal	retrorectal	ADJ
gra-842	31	4	tumors	tumor	NOUN
gra-842	31	5	remain	remain	VERB
gra-842	31	6	a	a	DET
gra-842	31	7	difcult	difcult	NOUN
gra-842	31	8	diagnostic	diagnostic	ADJ
gra-842	31	9	and	and	CCONJ
gra-842	31	10	therapeutic	therapeutic	ADJ
gra-842	31	11	challenge	challenge	NOUN
gra-842	31	12	despite	despite	SCONJ
gra-842	31	13	the	the	DET
gra-842	31	14	use	use	NOUN
gra-842	31	15	of	of	ADP
gra-842	31	16	newer	new	ADJ
gra-842	31	17	imaging	imaging	NOUN
gra-842	31	18	modalities	modality	NOUN
gra-842	31	19	and	and	CCONJ
gra-842	31	20	improvements	improvement	NOUN
gra-842	31	21	in	in	ADP
gra-842	31	22	perioperative	perioperative	ADJ
gra-842	31	23	care	care	NOUN
gra-842	31	24	.	.	PUNCT
gra-842	32	1	complete	complete	ADJ
gra-842	32	2	resection	resection	NOUN
gra-842	32	3	with	with	ADP
gra-842	32	4	negative	negative	ADJ
gra-842	32	5	margins	margin	NOUN
gra-842	32	6	is	be	AUX
gra-842	32	7	the	the	DET
gra-842	32	8	standard	standard	NOUN
gra-842	32	9	for	for	ADP
gra-842	32	10	benign	benign	ADJ
gra-842	32	11	retrorectal	retrorectal	ADJ
gra-842	32	12	tumors	tumor	NOUN
gra-842	32	13	.	.	PUNCT
gra-842	33	1	abstract	abstract	ADJ
gra-842	33	2	keywords	keyword	NOUN
gra-842	33	3	:	:	PUNCT
gra-842	33	4	retrorectal	retrorectal	ADJ
gra-842	33	5	tumor	tumor	NOUN
gra-842	33	6	,	,	PUNCT
gra-842	33	7	presacral	presacral	ADJ
gra-842	33	8	space	space	NOUN
gra-842	33	9	.	.	PUNCT
gra-842	34	1	dr	dr	PROPN
gra-842	34	2	.	.	PROPN
gra-842	34	3	esha	esha	PROPN
gra-842	34	4	bansal	bansal	PROPN
gra-842	34	5	*	*	PROPN
gra-842	34	6	nd2	nd2	NOUN
gra-842	34	7	year	year	NOUN
gra-842	34	8	resident	resident	NOUN
gra-842	34	9	,	,	PUNCT
gra-842	34	10	department	department	NOUN
gra-842	34	11	of	of	ADP
gra-842	34	12	general	general	ADJ
gra-842	34	13	surgery	surgery	NOUN
gra-842	34	14	,	,	PUNCT
gra-842	34	15	svpimsr	svpimsr	PROPN
gra-842	34	16	,	,	PUNCT
gra-842	34	17	ahmedabad	ahmedabad	PROPN
gra-842	34	18	.	.	PUNCT
gra-842	35	1	*	*	PUNCT
gra-842	35	2	corresponding	correspond	VERB
gra-842	35	3	author	author	NOUN
gra-842	35	4	dr	dr	PROPN
gra-842	35	5	.	.	PROPN
gra-842	35	6	vaibhav	vaibhav	PROPN
gra-842	35	7	parekh	parekh	PROPN
gra-842	35	8	rd3	rd3	PROPN
gra-842	35	9	year	year	PROPN
gra-842	35	10	resident	resident	NOUN
gra-842	35	11	,	,	PUNCT
gra-842	35	12	department	department	NOUN
gra-842	35	13	of	of	ADP
gra-842	35	14	general	general	ADJ
gra-842	35	15	surgery	surgery	NOUN
gra-842	35	16	,	,	PUNCT
gra-842	35	17	svpimsr	svpimsr	PROPN
gra-842	35	18	,	,	PUNCT
gra-842	35	19	ahmedabad	ahmedabad	PROPN
gra-842	35	20	.	.	PUNCT
gra-842	36	1	dr	dr	PROPN
gra-842	36	2	.	.	PROPN
gra-842	36	3	sunny	sunny	ADJ
gra-842	36	4	gajjar	gajjar	NOUN
gra-842	36	5	rd3	rd3	PROPN
gra-842	36	6	year	year	PROPN
gra-842	36	7	resident	resident	NOUN
gra-842	36	8	,	,	PUNCT
gra-842	36	9	department	department	NOUN
gra-842	36	10	of	of	ADP
gra-842	36	11	general	general	ADJ
gra-842	36	12	surgery	surgery	NOUN
gra-842	36	13	,	,	PUNCT
gra-842	36	14	svpimsr	svpimsr	PROPN
gra-842	36	15	,	,	PUNCT
gra-842	36	16	ahmedabad	ahmedabad	PROPN
gra-842	36	17	.	.	PUNCT
gra-842	37	1	volume-8	volume-8	NUM
gra-842	37	2	,	,	PUNCT
gra-842	37	3	issue-11	issue-11	PROPN
gra-842	37	4	,	,	PUNCT
gra-842	37	5	november-2019	november-2019	ADJ
gra-842	37	6	•	•	NOUN
gra-842	37	7	print	print	NOUN
gra-842	37	8	issn	issn	PROPN
gra-842	37	9	no	no	NOUN
gra-842	37	10	.	.	PROPN
gra-842	38	1	2277	2277	NUM
gra-842	38	2	8160	8160	NUM
gra-842	38	3	•	•	NOUN
gra-842	38	4	doi	doi	NOUN
gra-842	38	5	:	:	PUNCT
gra-842	38	6	10.36106	10.36106	NUM
gra-842	38	7	/	/	SYM
gra-842	38	8	gjra	gjra	NOUN
gra-842	38	9	26	26	NUM
gra-842	38	10	x	x	NOUN
gra-842	38	11	gjra	gjra	ADJ
gra-842	38	12	global	global	ADJ
gra-842	38	13	journal	journal	PROPN
gra-842	38	14	for	for	ADP
gra-842	38	15	research	research	NOUN
gra-842	38	16	analysis	analysis	NOUN
gra-842	38	17	without	without	ADP
gra-842	38	18	any	any	DET
gra-842	38	19	evidence	evidence	NOUN
gra-842	38	20	of	of	ADP
gra-842	38	21	calcication	calcication	NOUN
gra-842	38	22	,	,	PUNCT
gra-842	38	23	necrosis	necrosis	NOUN
gra-842	38	24	or	or	CCONJ
gra-842	38	25	fat	fat	ADJ
gra-842	38	26	density	density	NOUN
gra-842	38	27	within	within	ADP
gra-842	38	28	it	it	PRON
gra-842	38	29	.	.	PUNCT
gra-842	39	1	lesion	lesion	NOUN
gra-842	39	2	displaces	displace	VERB
gra-842	39	3	anus	anus	NOUN
gra-842	39	4	anteriorly	anteriorly	NOUN
gra-842	39	5	;	;	PUNCT
gra-842	39	6	laterally	laterally	ADV
gra-842	39	7	on	on	ADP
gra-842	39	8	the	the	DET
gra-842	39	9	right	right	ADJ
gra-842	39	10	side	side	NOUN
gra-842	39	11	it	it	PRON
gra-842	39	12	compresses	compress	VERB
gra-842	39	13	and	and	CCONJ
gra-842	39	14	displaces	displace	VERB
gra-842	39	15	rectum	rectum	NOUN
gra-842	39	16	and	and	CCONJ
gra-842	39	17	shows	show	VERB
gra-842	39	18	focal	focal	ADJ
gra-842	39	19	obliteration	obliteration	NOUN
gra-842	39	20	of	of	ADP
gra-842	39	21	fat	fat	ADJ
gra-842	39	22	plane	plane	NOUN
gra-842	39	23	with	with	ADP
gra-842	39	24	the	the	DET
gra-842	39	25	distal	distal	ADJ
gra-842	39	26	rectum	rectum	NOUN
gra-842	39	27	.	.	PUNCT
gra-842	40	1	exploratory	exploratory	ADJ
gra-842	40	2	laparotomy	laparotomy	NOUN
gra-842	40	3	was	be	AUX
gra-842	40	4	done	do	VERB
gra-842	40	5	with	with	ADP
gra-842	40	6	lower	low	ADJ
gra-842	40	7	midline	midline	NOUN
gra-842	40	8	incision	incision	NOUN
gra-842	40	9	and	and	CCONJ
gra-842	40	10	on	on	ADP
gra-842	40	11	entering	enter	VERB
gra-842	40	12	the	the	DET
gra-842	40	13	peritoneal	peritoneal	ADJ
gra-842	40	14	cavity	cavity	NOUN
gra-842	40	15	,	,	PUNCT
gra-842	40	16	hard	hard	ADV
gra-842	40	17	impacted	impact	VERB
gra-842	40	18	mass	mass	NOUN
gra-842	40	19	was	be	AUX
gra-842	40	20	palpable	palpable	ADJ
gra-842	40	21	over	over	ADP
gra-842	40	22	the	the	DET
gra-842	40	23	pre	pre	ADJ
gra-842	40	24	-	-	ADJ
gra-842	40	25	coccygeal	coccygeal	ADJ
gra-842	40	26	region	region	NOUN
gra-842	40	27	and	and	CCONJ
gra-842	40	28	so	so	ADV
gra-842	40	29	small	small	ADJ
gra-842	40	30	part	part	NOUN
gra-842	40	31	was	be	AUX
gra-842	40	32	resected	resect	VERB
gra-842	40	33	and	and	CCONJ
gra-842	40	34	sent	send	VERB
gra-842	40	35	for	for	ADP
gra-842	40	36	frozen	frozen	ADJ
gra-842	40	37	section	section	NOUN
gra-842	40	38	histopathology	histopathology	NOUN
gra-842	40	39	.	.	PUNCT
gra-842	41	1	hard	hard	ADJ
gra-842	41	2	mass	mass	PROPN
gra-842	41	3	was	be	AUX
gra-842	41	4	adherent	adherent	ADJ
gra-842	41	5	to	to	ADP
gra-842	41	6	coccyx	coccyx	NOUN
gra-842	41	7	and	and	CCONJ
gra-842	41	8	hence	hence	ADV
gra-842	41	9	was	be	AUX
gra-842	41	10	difcult	difcult	VERB
gra-842	41	11	to	to	PART
gra-842	41	12	separate	separate	VERB
gra-842	41	13	.	.	PUNCT
gra-842	42	1	hpe	hpe	PROPN
gra-842	42	2	showed	show	VERB
gra-842	42	3	spindle	spindle	NOUN
gra-842	42	4	cell	cell	NOUN
gra-842	42	5	tumor	tumor	NOUN
gra-842	42	6	;	;	PUNCT
gra-842	42	7	possibility	possibility	NOUN
gra-842	42	8	of	of	ADP
gra-842	42	9	(	(	PUNCT
gra-842	42	10	1	1	NUM
gra-842	42	11	)	)	PUNCT
gra-842	42	12	low	low	ADJ
gra-842	42	13	grade	grade	NOUN
gra-842	42	14	fibromyxoid	fibromyxoid	ADJ
gra-842	42	15	sarcoma	sarcoma	NOUN
gra-842	42	16	(	(	PUNCT
gra-842	42	17	2	2	NUM
gra-842	42	18	)	)	PUNCT
gra-842	42	19	spindle	spindle	NOUN
gra-842	42	20	cell	cell	NOUN
gra-842	42	21	tumor	tumor	NOUN
gra-842	42	22	of	of	ADP
gra-842	42	23	neurogenic	neurogenic	ADJ
gra-842	42	24	origin	origin	NOUN
gra-842	42	25	later	later	ADV
gra-842	42	26	mri	mri	NOUN
gra-842	42	27	abdomen	abdomen	PROPN
gra-842	42	28	was	be	AUX
gra-842	42	29	done	do	VERB
gra-842	42	30	which	which	PRON
gra-842	42	31	showed	show	VERB
gra-842	42	32	approx	approx	PROPN
gra-842	42	33	41	41	NUM
gra-842	42	34	*	*	NUM
gra-842	42	35	45	45	NUM
gra-842	42	36	*	*	SYM
gra-842	42	37	32	32	NUM
gra-842	42	38	mm	mm	NOUN
gra-842	42	39	sized	sized	ADJ
gra-842	42	40	ill	ill	ADV
gra-842	42	41	dened	dene	VERB
gra-842	42	42	hetergenously	hetergenously	ADV
gra-842	42	43	enhancing	enhance	VERB
gra-842	42	44	altered	alter	VERB
gra-842	42	45	signal	signal	NOUN
gra-842	42	46	intensity	intensity	NOUN
gra-842	42	47	lesion	lesion	NOUN
gra-842	42	48	noted	note	VERB
gra-842	42	49	involving	involve	VERB
gra-842	42	50	retrorectal	retrorectal	ADJ
gra-842	42	51	space	space	NOUN
gra-842	42	52	(	(	PUNCT
gra-842	42	53	left	leave	VERB
gra-842	42	54	>	>	X
gra-842	42	55	right	right	NOUN
gra-842	42	56	)	)	PUNCT
gra-842	42	57	.	.	PUNCT
gra-842	43	1	the	the	DET
gra-842	43	2	lesion	lesion	NOUN
gra-842	43	3	invades	invade	VERB
gra-842	43	4	both	both	CCONJ
gra-842	43	5	levator	levator	NOUN
gra-842	43	6	ani	ani	SYM
gra-842	43	7	/	/	SYM
gra-842	43	8	puborectalis	puborectalis	ADJ
gra-842	43	9	muscle	muscle	NOUN
gra-842	43	10	;	;	PUNCT
gra-842	43	11	inltrates	inltrate	VERB
gra-842	43	12	in	in	ADP
gra-842	43	13	fat	fat	NOUN
gra-842	43	14	of	of	ADP
gra-842	43	15	both	both	CCONJ
gra-842	43	16	ischiorectal	ischiorectal	ADJ
gra-842	43	17	fossa	fossa	NOUN
gra-842	43	18	,	,	PUNCT
gra-842	43	19	displaces	displace	VERB
gra-842	43	20	rectum	rectum	NOUN
gra-842	43	21	anteriorly	anteriorly	ADV
gra-842	43	22	with	with	ADP
gra-842	43	23	loss	loss	NOUN
gra-842	43	24	of	of	ADP
gra-842	43	25	fat	fat	ADJ
gra-842	43	26	plane	plane	NOUN
gra-842	43	27	and	and	CCONJ
gra-842	43	28	possible	possible	ADJ
gra-842	43	29	invasion	invasion	NOUN
gra-842	43	30	into	into	ADP
gra-842	43	31	postero	postero	NOUN
gra-842	43	32	-	-	PUNCT
gra-842	43	33	lateral	lateral	ADJ
gra-842	43	34	wall	wall	NOUN
gra-842	43	35	of	of	ADP
gra-842	43	36	rectum	rectum	NOUN
gra-842	43	37	.	.	PUNCT
gra-842	44	1	the	the	DET
gra-842	44	2	lesion	lesion	NOUN
gra-842	44	3	extends	extend	VERB
gra-842	44	4	inferiorly	inferiorly	ADV
gra-842	44	5	upto	upto	ADJ
gra-842	44	6	natal	natal	ADJ
gra-842	44	7	cleft	cleft	NOUN
gra-842	44	8	.	.	PUNCT
gra-842	45	1	patient	patient	NOUN
gra-842	45	2	was	be	AUX
gra-842	45	3	then	then	ADV
gra-842	45	4	again	again	ADV
gra-842	45	5	taken	take	VERB
gra-842	45	6	for	for	ADP
gra-842	45	7	surgery	surgery	NOUN
gra-842	45	8	,	,	PUNCT
gra-842	45	9	and	and	CCONJ
gra-842	45	10	jack	jack	NOUN
gra-842	45	11	-	-	PUNCT
gra-842	45	12	knife	knife	NOUN
gra-842	45	13	position	position	NOUN
gra-842	45	14	was	be	AUX
gra-842	45	15	given	give	VERB
gra-842	45	16	.	.	PUNCT
gra-842	46	1	vertical	vertical	ADJ
gra-842	46	2	incision	incision	NOUN
gra-842	46	3	put	put	VERB
gra-842	46	4	on	on	ADP
gra-842	46	5	gluteal	gluteal	ADJ
gra-842	46	6	cleft	cleft	NOUN
gra-842	46	7	,	,	PUNCT
gra-842	46	8	approx	approx	PROPN
gra-842	46	9	6	6	NUM
gra-842	46	10	*	*	SYM
gra-842	46	11	4	4	NUM
gra-842	46	12	*	*	SYM
gra-842	46	13	3	3	NUM
gra-842	46	14	cm	cm	NOUN
gra-842	46	15	sized	sized	ADJ
gra-842	46	16	rm	rm	NOUN
gra-842	46	17	-	-	PUNCT
gra-842	46	18	hard	hard	ADJ
gra-842	46	19	consistency	consistency	NOUN
gra-842	46	20	mass	mass	NOUN
gra-842	46	21	visualised	visualise	VERB
gra-842	46	22	and	and	CCONJ
gra-842	46	23	removed	remove	VERB
gra-842	46	24	from	from	ADP
gra-842	46	25	left	leave	VERB
gra-842	46	26	ischio	ischio	NOUN
gra-842	46	27	-	-	PUNCT
gra-842	46	28	rectal	rectal	ADJ
gra-842	46	29	space	space	NOUN
gra-842	46	30	.	.	PUNCT
gra-842	47	1	another	another	DET
gra-842	47	2	2	2	NUM
gra-842	47	3	*	*	SYM
gra-842	47	4	2	2	NUM
gra-842	47	5	*	*	SYM
gra-842	47	6	3	3	NUM
gra-842	47	7	cm	cm	NOUN
gra-842	47	8	sized	sized	ADJ
gra-842	47	9	mass	mass	NOUN
gra-842	47	10	with	with	ADP
gra-842	47	11	similar	similar	ADJ
gra-842	47	12	consistency	consistency	NOUN
gra-842	47	13	removed	remove	VERB
gra-842	47	14	from	from	ADP
gra-842	47	15	right	right	ADJ
gra-842	47	16	ischiorectal	ischiorectal	ADJ
gra-842	47	17	space	space	NOUN
gra-842	47	18	(	(	PUNCT
gra-842	47	19	figure	figure	NOUN
gra-842	47	20	2	2	NUM
gra-842	47	21	&	&	CCONJ
gra-842	47	22	3	3	NUM
gra-842	47	23	)	)	PUNCT
gra-842	47	24	and	and	CCONJ
gra-842	47	25	sigmoidostomy	sigmoidostomy	NOUN
gra-842	47	26	done	do	VERB
gra-842	47	27	.	.	PUNCT
gra-842	48	1	both	both	DET
gra-842	48	2	the	the	DET
gra-842	48	3	tissues	tissue	NOUN
gra-842	48	4	were	be	AUX
gra-842	48	5	sent	send	VERB
gra-842	48	6	for	for	ADP
gra-842	48	7	hpe	hpe	PROPN
gra-842	48	8	.	.	PUNCT
gra-842	49	1	biopsy	biopsy	NOUN
gra-842	49	2	from	from	ADP
gra-842	49	3	the	the	DET
gra-842	49	4	mass	mass	NOUN
gra-842	49	5	revealed	reveal	VERB
gra-842	49	6	low	low	ADJ
gra-842	49	7	grade	grade	NOUN
gra-842	49	8	spindle	spindle	NOUN
gra-842	49	9	cell	cell	NOUN
gra-842	49	10	sarcoma	sarcoma	NOUN
gra-842	49	11	and	and	CCONJ
gra-842	49	12	immunohistochemical	immunohistochemical	ADJ
gra-842	49	13	staining	staining	NOUN
gra-842	49	14	was	be	AUX
gra-842	49	15	advised	advise	VERB
gra-842	49	16	which	which	PRON
gra-842	49	17	conrmed	conrme	VERB
gra-842	49	18	the	the	DET
gra-842	49	19	diagnosis	diagnosis	NOUN
gra-842	49	20	of	of	ADP
gra-842	49	21	spindle	spindle	NOUN
gra-842	49	22	cell	cell	NOUN
gra-842	49	23	sarcoma	sarcoma	NOUN
gra-842	49	24	but	but	CCONJ
gra-842	49	25	sensitive	sensitive	ADJ
gra-842	49	26	to	to	ADP
gra-842	49	27	vimentin	vimentin	PROPN
gra-842	49	28	.	.	PUNCT
gra-842	50	1	fig	fig	NOUN
gra-842	50	2	1	1	NUM
gra-842	50	3	.	.	PUNCT
gra-842	51	1	mri	mri	NOUN
gra-842	51	2	showing	show	VERB
gra-842	51	3	heterogenous	heterogenous	ADJ
gra-842	51	4	mass	mass	NOUN
gra-842	51	5	in	in	ADP
gra-842	51	6	retrorectal	retrorectal	ADJ
gra-842	51	7	space	space	NOUN
gra-842	51	8	.	.	PUNCT
gra-842	52	1	fig	fig	NOUN
gra-842	52	2	2	2	NUM
gra-842	52	3	.	.	X
gra-842	53	1	two	two	NUM
gra-842	53	2	masses	masse	NOUN
gra-842	53	3	removed	remove	VERB
gra-842	53	4	from	from	ADP
gra-842	53	5	both	both	DET
gra-842	53	6	ischiorectal	ischiorectal	ADJ
gra-842	53	7	fossae	fossa	NOUN
gra-842	53	8	.	.	PUNCT
gra-842	54	1	fig	fig	NOUN
gra-842	54	2	3	3	NUM
gra-842	54	3	.	.	PUNCT
gra-842	55	1	photograph	photograph	VERB
gra-842	55	2	showing	show	VERB
gra-842	55	3	bilateral	bilateral	ADJ
gra-842	55	4	ishiorectal	ishiorectal	ADJ
gra-842	55	5	fossae	fossa	NOUN
gra-842	55	6	after	after	ADP
gra-842	55	7	removal	removal	NOUN
gra-842	55	8	of	of	ADP
gra-842	55	9	mass	mass	PROPN
gra-842	55	10	.	.	PUNCT
gra-842	55	11	fig	fig	PROPN
gra-842	55	12	4	4	NUM
gra-842	55	13	.	.	PUNCT
gra-842	55	14	histopathology	histopathology	NOUN
gra-842	55	15	and	and	CCONJ
gra-842	55	16	immunohistochemical	immunohistochemical	ADJ
gra-842	55	17	staining	stain	VERB
gra-842	55	18	showing	show	VERB
gra-842	55	19	broblasts	broblast	NOUN
gra-842	55	20	and	and	CCONJ
gra-842	55	21	myxoid	myxoid	ADJ
gra-842	55	22	stroma	stroma	PROPN
gra-842	55	23	.	.	PUNCT
gra-842	56	1	discussion	discussion	NOUN
gra-842	56	2	the	the	DET
gra-842	56	3	true	true	ADJ
gra-842	56	4	incidence	incidence	NOUN
gra-842	56	5	of	of	ADP
gra-842	56	6	tumors	tumor	NOUN
gra-842	56	7	occurring	occur	VERB
gra-842	56	8	in	in	ADP
gra-842	56	9	the	the	DET
gra-842	56	10	retrorectal	retrorectal	PROPN
gra-842	56	11	(	(	PUNCT
gra-842	56	12	presacral	presacral	ADJ
gra-842	56	13	)	)	PUNCT
gra-842	56	14	space	space	NOUN
gra-842	56	15	is	be	AUX
gra-842	56	16	unknown	unknown	ADJ
gra-842	56	17	,	,	PUNCT
gra-842	56	18	yet	yet	CCONJ
gra-842	56	19	several	several	ADJ
gra-842	56	20	retrospective	retrospective	ADJ
gra-842	56	21	series	series	NOUN
gra-842	56	22	suggest	suggest	VERB
gra-842	56	23	that	that	SCONJ
gra-842	56	24	between	between	SCONJ
gra-842	56	25	one	one	NUM
gra-842	56	26	and	and	CCONJ
gra-842	56	27	six	six	NUM
gra-842	56	28	patients	patient	NOUN
gra-842	56	29	will	will	AUX
gra-842	56	30	be	be	AUX
gra-842	56	31	diagnosed	diagnose	VERB
gra-842	56	32	(	(	PUNCT
gra-842	56	33	4)annually	4)annually	ADV
gra-842	56	34	in	in	ADP
gra-842	56	35	major	major	ADJ
gra-842	56	36	referral	referral	ADJ
gra-842	56	37	centers	center	NOUN
gra-842	56	38	.	.	PUNCT
gra-842	57	1	the	the	DET
gra-842	57	2	retrorectal	retrorectal	ADJ
gra-842	57	3	space	space	NOUN
gra-842	57	4	contains	contain	VERB
gra-842	57	5	multiple	multiple	ADJ
gra-842	57	6	embryologic	embryologic	ADJ
gra-842	57	7	remnants	remnant	NOUN
gra-842	57	8	derived	derive	VERB
gra-842	57	9	from	from	ADP
gra-842	57	10	a	a	DET
gra-842	57	11	variety	variety	NOUN
gra-842	57	12	of	of	ADP
gra-842	57	13	tissues	tissue	NOUN
gra-842	57	14	.	.	PUNCT
gra-842	58	1	tumors	tumor	NOUN
gra-842	58	2	that	that	PRON
gra-842	58	3	develop	develop	VERB
gra-842	58	4	in	in	ADP
gra-842	58	5	this	this	DET
gra-842	58	6	space	space	NOUN
gra-842	58	7	are	be	AUX
gra-842	58	8	both	both	PRON
gra-842	58	9	macroscopically	macroscopically	ADV
gra-842	58	10	and	and	CCONJ
gra-842	58	11	histologically	histologically	ADV
gra-842	58	12	heterogeneous	heterogeneous	ADJ
gra-842	58	13	.	.	PUNCT
gra-842	59	1	most	most	ADJ
gra-842	59	2	lesions	lesion	NOUN
gra-842	59	3	are	be	AUX
gra-842	59	4	benign	benign	ADJ
gra-842	59	5	,	,	PUNCT
gra-842	59	6	but	but	CCONJ
gra-842	59	7	malignant	malignant	ADJ
gra-842	59	8	neoplasms	neoplasm	NOUN
gra-842	59	9	are	be	AUX
gra-842	59	10	not	not	PART
gra-842	59	11	uncommon	uncommon	ADJ
gra-842	59	12	.	.	PUNCT
gra-842	60	1	solid	solid	ADJ
gra-842	60	2	lesions	lesion	NOUN
gra-842	60	3	are	be	AUX
gra-842	60	4	more	more	ADV
gra-842	60	5	likely	likely	ADJ
gra-842	60	6	to	to	PART
gra-842	60	7	be	be	AUX
gra-842	60	8	malignant	malignant	ADJ
gra-842	60	9	than	than	SCONJ
gra-842	60	10	are	be	AUX
gra-842	60	11	cystic	cystic	ADJ
gra-842	60	12	lesions	lesion	NOUN
gra-842	60	13	.	.	PUNCT
gra-842	61	1	neurogenic	neurogenic	ADJ
gra-842	61	2	lesions	lesion	NOUN
gra-842	61	3	typically	typically	ADV
gra-842	61	4	arise	arise	VERB
gra-842	61	5	from	from	ADP
gra-842	61	6	peripheral	peripheral	ADJ
gra-842	61	7	nerves	nerve	NOUN
gra-842	61	8	and	and	CCONJ
gra-842	61	9	represent	represent	VERB
gra-842	61	10	about	about	ADV
gra-842	61	11	10	10	NUM
gra-842	61	12	%	%	NOUN
gra-842	61	13	of	of	ADP
gra-842	61	14	retrorectal	retrorectal	NOUN
gra-842	61	15	(	(	PUNCT
gra-842	61	16	5)tumors	5)tumors	NUM
gra-842	61	17	.	.	PUNCT
gra-842	62	1	these	these	DET
gra-842	62	2	tumors	tumor	NOUN
gra-842	62	3	include	include	VERB
gra-842	62	4	neurobromas	neurobroma	NOUN
gra-842	62	5	and	and	CCONJ
gra-842	62	6	sarcomas	sarcoma	NOUN
gra-842	62	7	,	,	PUNCT
gra-842	62	8	neurilemomas	neurilemomas	PROPN
gra-842	62	9	,	,	PUNCT
gra-842	62	10	ependymomas	ependymoma	NOUN
gra-842	62	11	,	,	PUNCT
gra-842	62	12	and	and	CCONJ
gra-842	62	13	ganglioneuromas	ganglioneuroma	NOUN
gra-842	62	14	.	.	PUNCT
gra-842	63	1	fibromyxoid	fibromyxoid	ADJ
gra-842	63	2	sarcoma	sarcoma	NOUN
gra-842	63	3	is	be	AUX
gra-842	63	4	a	a	DET
gra-842	63	5	rare	rare	ADJ
gra-842	63	6	soft	soft	ADJ
gra-842	63	7	tissue	tissue	NOUN
gra-842	63	8	sarcoma	sarcoma	NOUN
gra-842	63	9	usually	usually	ADV
gra-842	63	10	located	locate	VERB
gra-842	63	11	in	in	ADP
gra-842	63	12	the	the	DET
gra-842	63	13	deep	deep	ADJ
gra-842	63	14	soft	soft	ADJ
gra-842	63	15	tissue	tissue	NOUN
gra-842	63	16	in	in	ADP
gra-842	63	17	the	the	DET
gra-842	63	18	groin	groin	NOUN
gra-842	63	19	or	or	CCONJ
gra-842	63	20	lower	low	ADJ
gra-842	63	21	extremities	extremity	NOUN
gra-842	63	22	.	.	PUNCT
gra-842	64	1	no	no	DET
gra-842	64	2	case	case	NOUN
gra-842	64	3	located	locate	VERB
gra-842	64	4	in	in	ADP
gra-842	64	5	retrorectal	retrorectal	ADJ
gra-842	64	6	space	space	NOUN
gra-842	64	7	has	have	AUX
gra-842	64	8	been	be	AUX
gra-842	64	9	reported	report	VERB
gra-842	64	10	in	in	ADP
gra-842	64	11	(	(	PUNCT
gra-842	64	12	4)literature	4)literature	NUM
gra-842	64	13	review	review	NOUN
gra-842	64	14	.	.	PUNCT
gra-842	65	1	thus	thus	ADV
gra-842	65	2	,	,	PUNCT
gra-842	65	3	it	it	PRON
gra-842	65	4	is	be	AUX
gra-842	65	5	important	important	ADJ
gra-842	65	6	to	to	PART
gra-842	65	7	differentiate	differentiate	VERB
gra-842	65	8	this	this	PRON
gra-842	65	9	(	(	PUNCT
gra-842	65	10	6)tumor	6)tumor	NUM
gra-842	65	11	from	from	ADP
gra-842	65	12	other	other	ADJ
gra-842	65	13	soft	soft	ADJ
gra-842	65	14	tissue	tissue	NOUN
gra-842	65	15	tumors	tumor	NOUN
gra-842	65	16	.	.	PUNCT
gra-842	66	1	symptoms	symptom	NOUN
gra-842	66	2	of	of	ADP
gra-842	66	3	retrorectal	retrorectal	ADJ
gra-842	66	4	tumors	tumor	NOUN
gra-842	66	5	are	be	AUX
gra-842	66	6	often	often	ADV
gra-842	66	7	nonspecic	nonspecic	PRON
gra-842	66	8	and	and	CCONJ
gra-842	66	9	are	be	AUX
gra-842	66	10	related	relate	VERB
gra-842	66	11	to	to	ADP
gra-842	66	12	the	the	DET
gra-842	66	13	location	location	NOUN
gra-842	66	14	and	and	CCONJ
gra-842	66	15	to	to	ADP
gra-842	66	16	the	the	DET
gra-842	66	17	size	size	NOUN
gra-842	66	18	of	of	ADP
gra-842	66	19	the	the	DET
gra-842	66	20	lesion	lesion	NOUN
gra-842	66	21	.	.	PUNCT
gra-842	67	1	the	the	DET
gra-842	67	2	majority	majority	NOUN
gra-842	67	3	of	of	ADP
gra-842	67	4	benign	benign	ADJ
gra-842	67	5	cystic	cystic	ADJ
gra-842	67	6	lesions	lesion	NOUN
gra-842	67	7	are	be	AUX
gra-842	67	8	asymptomatic	asymptomatic	ADJ
gra-842	67	9	and	and	CCONJ
gra-842	67	10	usually	usually	ADV
gra-842	67	11	discovered	discover	VERB
gra-842	67	12	on	on	ADP
gra-842	67	13	routine	routine	ADJ
gra-842	67	14	rectal	rectal	ADJ
gra-842	67	15	examination	examination	NOUN
gra-842	67	16	.	.	PUNCT
gra-842	68	1	pelvic	pelvic	ADJ
gra-842	68	2	mri	mri	NOUN
gra-842	68	3	is	be	AUX
gra-842	68	4	emerging	emerge	VERB
gra-842	68	5	as	as	ADP
gra-842	68	6	the	the	DET
gra-842	68	7	most	most	ADV
gra-842	68	8	sensitive	sensitive	ADJ
gra-842	68	9	and	and	CCONJ
gra-842	68	10	specic	specic	NOUN
gra-842	68	11	imaging	imaging	NOUN
gra-842	68	12	study	study	NOUN
gra-842	68	13	of	of	ADP
gra-842	68	14	these	these	DET
gra-842	68	15	tumors	tumor	NOUN
gra-842	68	16	.	.	PUNCT
gra-842	69	1	nonsurgical	nonsurgical	ADJ
gra-842	69	2	treatment	treatment	NOUN
gra-842	69	3	,	,	PUNCT
gra-842	69	4	such	such	ADJ
gra-842	69	5	as	as	ADP
gra-842	69	6	radiation	radiation	NOUN
gra-842	69	7	treatment	treatment	NOUN
gra-842	69	8	and	and	CCONJ
gra-842	69	9	chemotherapy	chemotherapy	NOUN
gra-842	69	10	,	,	PUNCT
gra-842	69	11	might	might	AUX
gra-842	69	12	improve	improve	VERB
gra-842	69	13	local	local	ADJ
gra-842	69	14	control	control	NOUN
gra-842	69	15	making	make	VERB
gra-842	69	16	the	the	DET
gra-842	69	17	appearance	appearance	NOUN
gra-842	69	18	of	of	ADP
gra-842	69	19	clinically	clinically	ADV
gra-842	69	20	evident	evident	ADJ
gra-842	69	21	metastatic	metastatic	ADJ
gra-842	69	22	disease	disease	NOUN
gra-842	69	23	less	less	ADV
gra-842	69	24	likely	likely	ADJ
gra-842	69	25	.	.	PUNCT
gra-842	70	1	although	although	SCONJ
gra-842	70	2	adjuvant	adjuvant	ADJ
gra-842	70	3	therapy	therapy	NOUN
gra-842	70	4	has	have	AUX
gra-842	70	5	enhanced	enhance	VERB
gra-842	70	6	the	the	DET
gra-842	70	7	chance	chance	NOUN
gra-842	70	8	of	of	ADP
gra-842	70	9	cure	cure	NOUN
gra-842	70	10	for	for	ADP
gra-842	70	11	retroperitoneal	retroperitoneal	ADJ
gra-842	70	12	sarcomas	sarcomas	NOUN
gra-842	70	13	,	,	PUNCT
gra-842	70	14	there	there	PRON
gra-842	70	15	are	be	VERB
gra-842	70	16	no	no	DET
gra-842	70	17	studies	study	NOUN
gra-842	70	18	for	for	ADP
gra-842	70	19	tumors	tumor	NOUN
gra-842	70	20	of	of	ADP
gra-842	70	21	retrorectal	retrorectal	ADJ
gra-842	70	22	space	space	NOUN
gra-842	70	23	.	.	PUNCT
gra-842	71	1	in	in	ADP
gra-842	71	2	fact	fact	NOUN
gra-842	71	3	,	,	PUNCT
gra-842	71	4	chemotherapy	chemotherapy	NOUN
gra-842	71	5	for	for	ADP
gra-842	71	6	retrorectal	retrorectal	ADJ
gra-842	71	7	sarcomas	sarcoma	NOUN
gra-842	71	8	seems	seem	VERB
gra-842	71	9	to	to	PART
gra-842	71	10	be	be	AUX
gra-842	71	11	ineffective	ineffective	ADJ
gra-842	71	12	.	.	PUNCT
gra-842	72	1	thus	thus	ADV
gra-842	72	2	,	,	PUNCT
gra-842	72	3	further	further	ADJ
gra-842	72	4	studies	study	NOUN
gra-842	72	5	are	be	AUX
gra-842	72	6	necessary	necessary	ADJ
gra-842	72	7	to	to	PART
gra-842	72	8	clarify	clarify	VERB
gra-842	72	9	the	the	DET
gra-842	72	10	role	role	NOUN
gra-842	72	11	of	of	ADP
gra-842	72	12	adjuvant	adjuvant	ADJ
gra-842	72	13	treatment	treatment	NOUN
gra-842	72	14	(	(	PUNCT
gra-842	72	15	6)for	6)for	NUM
gra-842	72	16	local	local	ADJ
gra-842	72	17	control	control	NOUN
gra-842	72	18	of	of	ADP
gra-842	72	19	these	these	DET
gra-842	72	20	tumors	tumor	NOUN
gra-842	72	21	.	.	PUNCT
gra-842	73	1	overall	overall	ADJ
gra-842	73	2	survival	survival	NOUN
gra-842	73	3	appears	appear	VERB
gra-842	73	4	to	to	ADP
gra-842	73	5	(	(	PUNCT
gra-842	73	6	7)be	7)be	NOUN
gra-842	73	7	good	good	ADJ
gra-842	73	8	if	if	SCONJ
gra-842	73	9	the	the	DET
gra-842	73	10	resection	resection	NOUN
gra-842	73	11	is	be	AUX
gra-842	73	12	complete	complete	ADJ
gra-842	73	13	.	.	PUNCT
gra-842	74	1	conclusion	conclusion	NOUN
gra-842	74	2	surgery	surgery	NOUN
gra-842	74	3	followed	follow	VERB
gra-842	74	4	by	by	ADP
gra-842	74	5	adjuvant	adjuvant	ADJ
gra-842	74	6	chemotherapy	chemotherapy	NOUN
gra-842	74	7	depending	depend	VERB
gra-842	74	8	upon	upon	SCONJ
gra-842	74	9	histological	histological	ADJ
gra-842	74	10	grade	grade	NOUN
gra-842	74	11	and	and	CCONJ
gra-842	74	12	immuno	immuno	ADJ
gra-842	74	13	-	-	ADJ
gra-842	74	14	histo	histo	ADJ
gra-842	74	15	-	-	PUNCT
gra-842	74	16	chemical	chemical	NOUN
gra-842	74	17	staining	staining	NOUN
gra-842	74	18	remains	remain	VERB
gra-842	74	19	the	the	DET
gra-842	74	20	mainstay	mainstay	NOUN
gra-842	74	21	of	of	ADP
gra-842	74	22	treatment	treatment	NOUN
gra-842	74	23	.	.	PUNCT
gra-842	75	1	for	for	ADP
gra-842	75	2	larger	large	ADJ
gra-842	75	3	tumors	tumor	NOUN
gra-842	75	4	,	,	PUNCT
gra-842	75	5	aggressive	aggressive	ADJ
gra-842	75	6	resection	resection	NOUN
gra-842	75	7	may	may	AUX
gra-842	75	8	be	be	AUX
gra-842	75	9	required	require	VERB
gra-842	75	10	to	to	PART
gra-842	75	11	achieve	achieve	VERB
gra-842	75	12	n0	n0	NUM
gra-842	75	13	margin	margin	NOUN
gra-842	75	14	.	.	PUNCT
gra-842	76	1	references	reference	NOUN
gra-842	76	2	1	1	NUM
gra-842	76	3	.	.	PUNCT
gra-842	76	4	surgical	surgical	ADJ
gra-842	76	5	management	management	NOUN
gra-842	76	6	of	of	ADP
gra-842	76	7	retrorectal	retrorectal	ADJ
gra-842	76	8	tumors	tumor	NOUN
gra-842	76	9	.	.	PUNCT
gra-842	77	1	ajr	ajr	PROPN
gra-842	77	2	2015	2015	NUM
gra-842	77	3	;	;	PUNCT
gra-842	77	4	204:386–395	204:386–395	NUM
gra-842	77	5	0361–803x/15/2042–386	0361–803x/15/2042–386	NUM
gra-842	77	6	2	2	NUM
gra-842	77	7	.	.	PUNCT
gra-842	77	8	retrorectal	retrorectal	ADJ
gra-842	77	9	tumors	tumor	NOUN
gra-842	77	10	.	.	PUNCT
gra-842	78	1	clinics	clinic	NOUN
gra-842	78	2	in	in	ADP
gra-842	78	3	colon	colon	NOUN
gra-842	78	4	and	and	CCONJ
gra-842	78	5	rectal	rectal	ADJ
gra-842	78	6	surgery	surgery	NOUN
gra-842	78	7	/	/	SYM
gra-842	78	8	volume	volume	NOUN
gra-842	78	9	19	19	NUM
gra-842	78	10	,	,	PUNCT
gra-842	78	11	number	number	NOUN
gra-842	78	12	2	2	NUM
gra-842	78	13	2006	2006	NUM
gra-842	78	14	3	3	NUM
gra-842	78	15	.	.	PUNCT
gra-842	78	16	table	table	NOUN
gra-842	78	17	1	1	NUM
gra-842	78	18	.	.	PUNCT
gra-842	78	19	published	publish	VERB
gra-842	78	20	in	in	ADP
gra-842	78	21	abdominal	abdominal	ADJ
gra-842	78	22	imaging	imaging	NOUN
gra-842	78	23	2015.mr	2015.mr	PROPN
gra-842	78	24	imaging	imaging	NOUN
gra-842	78	25	of	of	ADP
gra-842	78	26	the	the	DET
gra-842	78	27	retrorectal	retrorectal	ADJ
gra-842	78	28	–	–	PUNCT
gra-842	78	29	presacral	presacral	ADJ
gra-842	78	30	tumors	tumor	NOUN
gra-842	78	31	:	:	PUNCT
gra-842	78	32	an	an	DET
gra-842	78	33	algorithmic	algorithmic	ADJ
gra-842	78	34	approach	approach	NOUN
gra-842	78	35	.	.	PUNCT
gra-842	79	1	hooman	hooman	NOUN
gra-842	79	2	hosseininik	hosseininik	PROPN
gra-842	79	3	,	,	PUNCT
gra-842	79	4	keyanoosh	keyanoosh	PROPN
gra-842	79	5	hosseinzadeh	hosseinzadeh	PROPN
gra-842	79	6	,	,	PUNCT
gra-842	79	7	rajesh	rajesh	PROPN
gra-842	79	8	bhayana	bhayana	PROPN
gra-842	79	9	,	,	PUNCT
gra-842	79	10	kartik	kartik	PROPN
gra-842	79	11	s.	s.	PROPN
gra-842	79	12	jhaveri	jhaveri	PROPN
gra-842	79	13	.	.	PUNCT
gra-842	80	1	4	4	X
gra-842	80	2	.	.	X
gra-842	80	3	hobson	hobson	PROPN
gra-842	80	4	kg	kg	PROPN
gra-842	80	5	,	,	PUNCT
gra-842	80	6	ghaemmaghami	ghaemmaghami	ADJ
gra-842	80	7	v	v	NOUN
gra-842	80	8	,	,	PUNCT
gra-842	80	9	roe	roe	PROPN
gra-842	80	10	jp	jp	PROPN
gra-842	80	11	,	,	PUNCT
gra-842	80	12	goodnight	goodnight	PROPN
gra-842	80	13	je	je	PROPN
gra-842	80	14	,	,	PUNCT
gra-842	80	15	khatri	khatri	PROPN
gra-842	80	16	vp	vp	PROPN
gra-842	80	17	(	(	PUNCT
gra-842	80	18	2005	2005	NUM
gra-842	80	19	)	)	PUNCT
gra-842	80	20	tumors	tumor	NOUN
gra-842	80	21	of	of	ADP
gra-842	80	22	the	the	DET
gra-842	80	23	retrorectal	retrorectal	ADJ
gra-842	80	24	space	space	NOUN
gra-842	80	25	.	.	PUNCT
gra-842	81	1	dis	dis	PROPN
gra-842	81	2	colon	colon	NOUN
gra-842	81	3	rectum	rectum	NOUN
gra-842	81	4	48	48	NUM
gra-842	81	5	:	:	PUNCT
gra-842	81	6	1964	1964	NUM
gra-842	81	7	-	-	SYM
gra-842	81	8	1974	1974	NUM
gra-842	81	9	.	.	PUNCT
gra-842	82	1	5	5	NUM
gra-842	82	2	.	.	X
gra-842	82	3	glasgow	glasgow	PROPN
gra-842	82	4	sc	sc	PROPN
gra-842	82	5	,	,	PUNCT
gra-842	82	6	birnbaum	birnbaum	PROPN
gra-842	82	7	eh	eh	PROPN
gra-842	82	8	,	,	PUNCT
gra-842	82	9	lowney	lowney	PROPN
gra-842	82	10	jk	jk	PROPN
gra-842	82	11	,	,	PUNCT
gra-842	82	12	fleshman	fleshman	PROPN
gra-842	82	13	jw	jw	PROPN
gra-842	82	14	,	,	PUNCT
gra-842	82	15	kodner	kodner	PROPN
gra-842	82	16	ij	ij	PROPN
gra-842	82	17	,	,	PUNCT
gra-842	82	18	et	et	PROPN
gra-842	82	19	al	al	PROPN
gra-842	82	20	.	.	PUNCT
gra-842	83	1	(	(	PUNCT
gra-842	83	2	2005	2005	NUM
gra-842	83	3	)	)	PUNCT
gra-842	83	4	retrorectal	retrorectal	ADJ
gra-842	83	5	tumors	tumor	NOUN
gra-842	83	6	:	:	PUNCT
gra-842	83	7	a	a	DET
gra-842	83	8	diagnostic	diagnostic	ADJ
gra-842	83	9	and	and	CCONJ
gra-842	83	10	therapeutic	therapeutic	ADJ
gra-842	83	11	challenge	challenge	NOUN
gra-842	83	12	.	.	PUNCT
gra-842	84	1	dis	dis	PROPN
gra-842	84	2	colon	colon	NOUN
gra-842	84	3	rectum	rectum	NOUN
gra-842	84	4	48	48	NUM
gra-842	84	5	:	:	PUNCT
gra-842	84	6	1581	1581	NUM
gra-842	84	7	-	-	SYM
gra-842	84	8	1587	1587	NUM
gra-842	84	9	.	.	PUNCT
gra-842	85	1	6	6	X
gra-842	85	2	.	.	X
gra-842	85	3	evans	evans	PROPN
gra-842	85	4	hl	hl	PROPN
gra-842	85	5	(	(	PUNCT
gra-842	85	6	1993	1993	NUM
gra-842	85	7	)	)	PUNCT
gra-842	85	8	low	low	ADJ
gra-842	85	9	-	-	PUNCT
gra-842	85	10	grade	grade	NOUN
gra-842	85	11	bromyxoid	bromyxoid	PROPN
gra-842	85	12	sarcoma	sarcoma	NOUN
gra-842	85	13	.	.	PUNCT
gra-842	86	1	a	a	DET
gra-842	86	2	report	report	NOUN
gra-842	86	3	of	of	ADP
gra-842	86	4	12	12	NUM
gra-842	86	5	cases	case	NOUN
gra-842	86	6	.	.	PUNCT
gra-842	87	1	am	be	AUX
gra-842	87	2	j	j	PROPN
gra-842	87	3	surg	surg	NOUN
gra-842	87	4	pathol	pathol	VERB
gra-842	87	5	17	17	NUM
gra-842	87	6	:	:	PUNCT
gra-842	87	7	595	595	NUM
gra-842	87	8	-	-	SYM
gra-842	87	9	600	600	NUM
gra-842	87	10	.	.	PUNCT
gra-842	88	1	7	7	X
gra-842	88	2	.	.	X
gra-842	88	3	du	du	PROPN
gra-842	88	4	f	f	PROPN
gra-842	88	5	,	,	PUNCT
gra-842	88	6	jin	jin	PROPN
gra-842	88	7	k	k	PROPN
gra-842	88	8	,	,	PUNCT
gra-842	88	9	hu	hu	PROPN
gra-842	88	10	x	x	PROPN
gra-842	88	11	,	,	PUNCT
gra-842	88	12	dong	dong	PROPN
gra-842	88	13	x	x	PROPN
gra-842	88	14	,	,	PUNCT
gra-842	88	15	cao	cao	PROPN
gra-842	88	16	f	f	PROPN
gra-842	88	17	(	(	PUNCT
gra-842	88	18	2012	2012	NUM
gra-842	88	19	)	)	PUNCT
gra-842	88	20	surgical	surgical	ADJ
gra-842	88	21	treatment	treatment	NOUN
gra-842	88	22	of	of	ADP
gra-842	88	23	retrorectal	retrorectal	ADJ
gra-842	88	24	tumors	tumor	NOUN
gra-842	88	25	:	:	PUNCT
gra-842	88	26	a	a	DET
gra-842	88	27	retrospective	retrospective	ADJ
gra-842	88	28	study	study	NOUN
gra-842	88	29	of	of	ADP
gra-842	88	30	a	a	DET
gra-842	88	31	ten	ten	NUM
gra-842	88	32	-	-	PUNCT
gra-842	88	33	year	year	NOUN
gra-842	88	34	experience	experience	NOUN
gra-842	88	35	in	in	ADP
gra-842	88	36	three	three	NUM
gra-842	88	37	institutions	institution	NOUN
gra-842	88	38	.	.	PUNCT
gra-842	89	1	hepatogastroenterology	hepatogastroenterology	NOUN
gra-842	89	2	59	59	NUM
gra-842	89	3	:	:	PUNCT
gra-842	89	4	1374	1374	NUM
gra-842	89	5	-	-	SYM
gra-842	89	6	1377	1377	NUM
gra-842	89	7	.	.	PUNCT
gra-842	90	1	volume-8	volume-8	NUM
gra-842	90	2	,	,	PUNCT
gra-842	90	3	issue-11	issue-11	PROPN
gra-842	90	4	,	,	PUNCT
gra-842	90	5	november-2019	november-2019	ADJ
gra-842	90	6	•	•	NOUN
gra-842	90	7	print	print	NOUN
gra-842	90	8	issn	issn	PROPN
gra-842	90	9	no	no	NOUN
gra-842	90	10	.	.	PROPN
gra-842	91	1	2277	2277	NUM
gra-842	91	2	8160	8160	NUM
gra-842	91	3	•	•	NOUN
gra-842	91	4	doi	doi	NOUN
gra-842	91	5	:	:	PUNCT
gra-842	91	6	10.36106	10.36106	NUM
gra-842	91	7	/	/	SYM
gra-842	91	8	gjra	gjra	NOUN