� � � � � � � � � � � � � � 3 m 6 m 12 m 18 m Follow-upFollow-up PDT-1 PDT-2 (if lesions remain) � � � � � � � 0 10 20 30 40 50 60 70 80 90 100 after 1. PDT after 1. and 2. PDT C om pl et el y C le ar ed P at ie nt s [% ] Patient Complete Response [FAS] BF-200 ALA (n=55) Placebo (n=32) 0 10 20 30 40 50 60 70 80 90 100 after 1. PDT after 1. and 2. PDT C om pl et el y C le ar ed L es io ns [% ] Lesion Complete Response [FAS] BF-200 ALA (n=298) Placebo (n=173) � � � Skin surface Hyperpigmentation Hypopigmentation Mottled pigmentation Scarring Atrophy 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.00 0.10 0.20 0.30 0.40 0.50 0.00 0.10 0.20 0.30 0.40 0.50 0 12 26 52 Weeks after last PDT * * * * * * * * * * * * * * * * * 0 12 26 52 Weeks after last PDT 0 12 26 52 Weeks after last PDT 0 12 26 52 Weeks after last PDT 0 12 26 52 Weeks after last PDT 0 12 26 52 Weeks after last PDT Im p a ir m e n t s c o r e ( 0 - 3 ) Im p a ir m e n t s c o r e ( 0 - 3 ) Im p a ir m e n t s c o r e ( 0 - 3 ) Im p a ir m e n t s c o r e ( 0 - 3 ) Im p a ir m e n t s c o r e ( 0 - 3 ) Im p a ir m e n t s c o r e ( 0 - 3 ) ± � � � � Follow-up FC17PosterBiofronteraDirschkaPhotodynamicTherapyActinicKeratosis.pdf