Mycosis fungoides associated with florid sarcoid reactions.

We report a 59-year-old woman with disease manifestations diagnosed as mycosis fungoides (MF), as well as findings of sarcoidosis. The concurrence of these two disorders, both of which may be associated with basic immunopathogenic factors, has been reported. Histologically, the cutaneous findings of both non-caseating granulomas and an infiltrate compatible with MF in the same site leads to a discussion of granulomatous MF. Whether granulomatous MF simply represents sarcoidosis developing concomitantly with MF lymphoma or is, in fact, a distinct clinical and histologic type of MF is discussed. Reasons why granulomatous MF, like granulomators Hodgkin disease, might have a more favorable prognosis than the usual type of MF are considered.