Mycosis fungoides is a cutaneous T-cell lymphoma.
Erythematous stage lesions have a normal or atrophic epidermis and a banal lymphocytic infiltrate in the papillary dermis. Epidermotropism without spongiosis may be evident. Plaque stage lesions have 1. In tumor stage the dermis contains masses of pleomorphic cells including mycosis cells, and resembles histiocytic lymphoma. Return to Dermatology's Home page.