Rheumatoid pleural effusion with "R.A. cells" in the pleural fluid.
D001172:Arthritis, Rheumatoid / Q000150:complications*; D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000175:diagnosis / Q000209:etiology*; D012217:Rheumatoid Factor
D012217:Rheumatoid Factor