title: Rheumatoid lung disease, pneumothorax, and eosinophilia.
abstract: Four cases of the triad of rheumatoid lung disease, spontaneous pneumothorax, and peripheral blood eosinophilia are reported. Cavitation of a rheumatoid lung nodule caused the pneumothorax in at least 1 case. The significance of eosinophilia and its value as a marker of extra-articular manifestations of rheumatoid disease are discussed.
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications*; D004802:Eosinophilia / Q000150:complications*; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000150:complications*; D008297:Male; D008875:Middle Aged; D011030:Pneumothorax / Q000150:complications*; D012218:Rheumatoid Nodule / Q000150:complications