title: Intracranial histiocytic lymphoma with rheumatoid arthritis.
abstract: A patient with classical rheumatoid arthritis presented with a primary intracranial histiocytic lymphoma. He had not received cytotoxic drugs and had no evidence for Sjögren's syndrome or immunodeficiency. Previous radiation therapy to the shoulders is regarded as a possible, though unlikely, risk factor.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications*; D001932:Brain Neoplasms / Q000209:etiology* / Q000473:pathology; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000209:etiology* / Q000473:pathology; D008297:Male; D008875:Middle Aged