Chronic Cutaneous Lupus: A Case with Histopathological Mystery.

Lupus erythematosus tumidus (LET) is a form of chronic cutaneous lupus which presents with erythematous urticaria like plaques on sun-exposed sites. Histologically, lack of epidermal alterations differentiates the LET from other cutaneous lupus variants. Perivascular and periadnexal lymphocytic infiltration and interstitial mucin deposition are the main microscopic characteristics. However, in the literature there are few reports that assert variation of the histopathological findings. From this point of view, we report here a male patient who is an interesting example of cutaneous lupus erythematosus with clinical behaviour of lupus tumidus but histological characteristics of discoid lupus. [ABSTRACT FROM AUTHOR]