MSFinals-0769

A 50-year-old pharmacist with a longstanding diagnosis of sarcoidosis presents to the Dermatology Clinic with an unsightly rash. The rash has been present for a number of years, but the area affected is becoming more prominent and is making her feel very self-conscious. She has been told previously that the rash is connected to her sarcoidosis; however, she would like to know if anything can be done to treat it.
Which one of the following dermatological conditions is diagnostic of chronic sarcoidosis?