title: Rheumatoid pleural effusion. A transmission and scanning electron microscopic evaluation.
abstract: The pathognomonic triad of a rheumatoid pleural effusion (round multinucleated inflammatory giant cells, large elongated cells and a background of granular material) has only rarely been reported, with only one case examined by electron microscopy. This paper present an additional case with emphasis on its ultrastructural features and immunochemical characteristics. Our data support an origin of the components of the effusions in the pleural rheumatoid nodules.
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000473:pathology*; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D010996:Pleural Effusion / Q000473:pathology*