title: Malignant histiocytosis complicating rheumatoid arthritis: report of four cases.
abstract: Four patients with rheumatoid arthritis developed a similar type of lymphoreticular tumour. The morphology and immunocytochemical findings suggested that this was a form of malignant histiocytosis: there may be an important correlation between this tumour and rheumatoid arthritis.
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000150:complications* / Q000473:pathology; D008113:Liver Neoplasms / Q000150:complications* / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D008206:Lymphatic Diseases / Q000150:complications* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D013154:Spleen / Q000473:pathology