Sarcoïdose cutanée pseudotumorale associée à un lymphome malin non hodgkinien

Pseudotumoral forms of sarcoidosis are rare and have a misleading clinical aspect. In our case, the cutaneous mass was evocative of a secondary lymphoma site. The diagnosis of sarcoidosis was based on clinical and laboratory findings and after elimination of other potential causes of granuloma. The appearance of a lymphoma in a patient with a history of sarcoidosis is rare but not fortuitous, since the notion of “sarcoidosis-lymphoma syndrome” exists. The incidence of lymphomas is 5.5-fold higher in patients presenting sarcoidosis than among the general population. Their time to onset is around 7 years after the discovery of sarcoidosis. The most common forms involve Hodgkin's disease. The efficacy of therapy on the blood disease underlying the sarcoidosis is variable.