title: Cytologic manifestation of rheumatoid arthritis in pleural effusion: a case report.
abstract: The cytologic changes of rheumatoid pleural effusions have been reported infrequently. A case is presented illustrating that the recognition of these changes can have clinical significance. The diagnostic cytologic picture comprises multinucleated giant cells and histiocytes in a granular, necrotic background. The probable tissue origin of the cytologic findings is discussed.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000473:pathology*; D005260:Female; D006644:Histiocytes; D006801:Humans; D008875:Middle Aged; D009336:Necrosis; D010994:Pleura / Q000473:pathology*; D010996:Pleural Effusion / Q000166:cytology*