Answer: Pop Quiz #11

Next Steps in Derm Pop Quiz Friday #11

Correct Answer:  4.  Septal panniculitis

Explanation:  This lesion is most characteristic of erythema nodosum. On pathology, erythema nodosum shows septal panniculitis.  Erythema nodosum has been associated with underyling systmeic disease (Bechet’s syndrome, IBD, sarcoidosis), infections (streptococcus, deep fungal, mycobacterial, protozoa), and drugs (sulfa, penicillin, OCP).

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Written explanation provided by Dr. Sivaramya Kollipara

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