Giant synovial dissecting cyst. An uncommon feature of rheumatoid arthritis.
D001172:Arthritis, Rheumatoid / Q000150:complications*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007719:Knee Joint; D008875:Middle Aged; D011859:Radiography; D013581:Synovial Cyst / Q000000981:diagnostic imaging*