What's your diagnosis? Patient's an adolescent girl and there was no trauma. I'll post the correct answer in a few days time.
Gangrene obviously but with history of no trauma probably due to DVT evident from surrounding scaly dermatitis
Correct answer: Bazin’s disease: localized areas of fat necrosis with ulceration and an indurated rash, characteristically on adolescent girls’ calves. Originally thought to be a from of skin-TB, but cases unrelated to tuberculosis have been seen.