title: Subchondral pseudocysts in rheumatoid arthritis.
abstract: Subchondral cyst formation (geode) is a not uncommon manifestation of rheumatoid arthritis which may at times impede correct radiologic interpretation. Four patients with rheumatoid arthritis who demonstrated striking subarticular cystic erosive disease are described. These cases emphasize the nature and appearance of this interesting finding.
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000150:complications / Q000000981:diagnostic imaging*; D003560:Cysts / Q000209:etiology; D005260:Female; D005534:Foot Diseases / Q000000981:diagnostic imaging; D006229:Hand Dermatoses / Q000000981:diagnostic imaging; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography