External iliac venous compression by a giant iliopsoas rheumatoid bursa.
D001172:Arthritis, Rheumatoid / Q000150:complications*; D003251:Constriction, Pathologic; D006801:Humans; D007084:Iliac Vein; D008297:Male; D008875:Middle Aged; D013581:Synovial Cyst / Q000150:complications* / Q000209:etiology; D014652:Vascular Diseases / Q000209:etiology