Abstract:

A 36-year-old woman presented with a 3-year history of pruritic erythema and scaling on the trunk and extremities. Dermatological examination revealed ill-defined light pink macules with white lamellar scales on the chest, abdomen and buttocks. Histologically, there was a focal mononuclear cell infiltrate in the superficial dermis, with the epidermotropism of some cells and mild atypia of epidermotropic cells, as well as an interstitial mononuclear cell infiltrate and mild deposition of mucin between the collagen fibers in the middle dermis. CD3 and CD4 were expressed by scattered mononuclear cells infiltrating the upper and middle dermis. Based on these data, the patient was diagnosed with interstitial granuloma fungoides.