PMC6170962_01
(a) Photodistributed red-brown non-scaly plaques in a photodistributed pattern on the head and neck. (b) A punch biopsy with H&E stain demonstrating sarcoidal granulomata within the superficial and deep dermis, and (c) showing no evidence of leprosy, tuberculosis or another mycobacterium within the granulomas on Fite stain. The photomicrographs are at taken at 40x and 200x magnification, respectively.
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On presentation, he had photodistributed well-defined red-brown, annular and ovoid non-scaly plaques mainly involving the head, neck, shoulders, and upper chest (Figure 1(a)). There were no atypical lymphocytes, diffuse neutrophilic/lymphocytic infiltrates, dermal edema, mucin, or epidermal change (Figure 1(b)). The skin biopsy (Figure 1(c)) and a blood smear were negative for leprosy.