Question: Can you identify this condition?

A young female patient presents with a chronic large, waxy, yellowish-red lesion on her lower extremity, characterized by telangiectases, central atrophy, and several ulcerations. It has persisted for several years and various creams have been only minimally successful. She has a history of type 1 diabetes mellitus but is otherwise healthy.

The most likely diagnosis is

1. Granuloma annulare

2. Necrobiosis lipoidica

3. Necrobiotic xanthogranuloma

4. Sarcoidosis

5. Erythema nodosum

Answer on page 867

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