title: Florid epithelioid cell and sarcoid-type reaction associated with non-Hodgkin's lymphoma.
abstract: Five patients suffering from non-Hodgkin's lymphoma associated with an intense infiltration of epithelioid histiocytes and even sarcoid-type granulomas in the involved tissue are described. A similar tissue reaction, at both involved and uninvolved sites, has been described in patients with Hodgkin's disease. The cause of this reaction may be immunological; its prognostic significance still awaits elucidation. In the case of non-Hodgkin's lymphomas, it may cause difficulty in diagnosis of lymphoma and hence may result in unnecessary delay in the initiation of therapy.
mesh_terms: D000328:Adult; D000368:Aged; D001853:Bone Marrow / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008099:Liver / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D008223:Lymphoma / Q000473:pathology*; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012507:Sarcoidosis / Q000175:diagnosis; D013154:Spleen / Q000473:pathology