Dermatology: Practical and Conceptual Observation | Dermatol Pract Concept 2017;7(2):11 51 DERMATOLOGY PRACTICAL & CONCEPTUAL www.derm101.com Introduction Pedunculated basal cell carcinoma (BCC) is a rare BCC vari- ant. There have been limited cases reported in the PubMed database [1-6]. Dermoscopic features were reported in only one of them [6] and not one described reflectance confocal microscopy (RCM) features. Case A 7 x 5 mm slight brown-gray pigmented pedunculated lesion was detected on the right post-auricular region on the routine skin examination of a 60-year-old woman. She had a history of multiple BCCs due to radiotherapy for the treatment of lymphoma in childhood. The lesion displayed arborizing vessels, multiple blue-gray globules and ovoid nests on der- moscopy (Figure 1). On RCM, at the epidermal layer, polarization (stream- ing) and some dendritic cells and at the dermoepidermal junctional level, and multiple tumor islands with different sizes were observed. In addition, there were many canalicular vessels all throughout the lesion (Vivascope 3000 Handheld, Mavig GmbH, Munich, Germany). A pedunculated nodular BCC was diagnosed with the large basaloid tumor islands with peripheral palisading and retraction artifact and dilated vascular spaces on histopathology (Figure 2). The differential diagnosis of pigmented pedunculated lesion may sometimes be challenging and include an acro- chordon, seborrheic keratosis, condyloma, dermal nevus, BCC, eccrine poroma or trichoblastoma. Moreover, a pedun- culated melanoma should also be excluded. Thus, in vivo diagnostic techniques such as dermoscopy and RCM may play a crucial role in the differential diagnosis. Dermoscopy and reflectance confocal microscopy in pedunculated basal cell carcinoma Seda Yildiz1, Isil Karaarslan1, Banu Yaman2, Fezal Ozdemir1 1 Department of Dermatology, Faculty of Medicine, University of Ege, Izmir, Turkey 2 Department of Pathology, Faculty of Medicine, University of Ege, Izmir, Turkey Key words: dermoscopy, reflectance confocal micoscopy, basal cell carcinoma Citation: Yildiz S, Karaarslan I, Yaman B, Ozdemir F. Dermoscopy and reflectance confocal microscopy in pedunculated basal cell carcinoma. Dermatol Pract Concept. 2017;7(2):11. DOI: https://doi.org/10.5826/dpc.0702a11 Received: January 9, 2017; Accepted: January 14, 2017; Published: April 30, 2017 Copyright: ©2017 Seda et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funding: None. Competing interests: The authors have no conflicts of interest to disclose. All authors have contributed significantly to this publication. Corresponding author: Seda Yildiz, MD, Department of Dermatology, Faculty of Medicine, University of Ege, 35100, Bornova, Izmir, Turkey. Tel. +902323902698; Fax: +902323399702. Email: yildizsda@gmail.com There have been limited cases of pedunculated basal cell carcinoma (BCC) reported in the literature. The dermoscopic features were described in only one of them. However, not one of them described the confocal microscopy features. In this report we presented a case of pedunculated basal cell carcinoma (BCC) with dermoscopic and reflectance confocal microscopy features. ABSTRACT 52 Observation | Dermatol Pract Concept 2017;7(2):11 There have been rare cases of pedun- culated BCC reported in the literature. Dermoscopic features were mentioned in only one report describing multiple acrochordon-like BCCs in a patient with Gorlin-Goltz syndrome [6]. In that case, the dermoscopic features observed were multiple or isolated gray-blue globules and/or telangiectases of different caliber and number of branches. Other dermo- scopic features of BCC, such as ulcer- ation, maple leaf-like areas, or spoke- wheel areas, were not detected. The dermoscopic features observed in the present case were similar to those find- ings. On the other hand, RCM findings were not described in any of the cases in the literature. In the present case, observing the typical RCM criteria for BCC helped in making a more confident preoperative diagnosis. To our knowl- edge, this is the first RCM description of a pedunculated BCC. References 1. Megahed M. Polypoid basal cell carci- noma: a new clinicopathological variant. Br J Dermatol. 1999;140(4):701-703. 2. Misago N, Suzuki Y, Miura Y, Narisawa Y. Giant polypoid basal cell carcinoma with features of fibroepithelioma of Pinkus and extensive cornification. Eur J Dermatol. 2004;14(4):272-275. 3. Misago N, Narisawa Y. Polypoid Basal cell carcinoma on the perianal region: a case report and review of the literature. J Dermatol. 2004;31(1):51-55. 4. Azzam C, Arrese JE, Jacquemin D, Cal- teux N, Piérard GE. Pedunculated and pig- mented basal cell carcinoma: an unusual presentation]. Rev Med Liege. 2006;61 (9):614-616. 5. Repertinger SK, Stevens T, Markin N, et al. Fibroepithelioma of Pinkus with pleo- morphic epithelial giant cells. Dermatol Online J. 2008;14(12):13. 6. Feito-Rodríguez M, Sendagorta-Cudós E, Moratinos-Martínez M, et al. Derma- toscopic characteristics of acrochordon- like basal cell carcinomas in Gorlin-Goltz syndrome. J Am Acad Dermatol. 2009; 60(5):857-861. Figure 1. (a, b) Slight brown-gray pigmented pedunculated lesion. (c, d) Arborizing vessels, multiple blue-gray globules and ovoid nests on dermoscopy. [Copyright: ©2017 Seda et al.] A B C D Figure 2. (a) Bright tumor island (red arrows). (b) Epidermal polarization. (c) Tumor island and canalicular vessels. (d) Atrophic epidermis, large basaloid tumor islands and melano- phages (H&Ex40) (Inset: Pedunculated nodular BCC [H&Ex20]). [Copyright: ©2017 Seda et al.] A B C D