title: Shoulder joint rupture in juvenile rheumatoid arthritis producing bicipital masses and a hemorrhagic sign.
abstract: Multiple episodes of shoulder joint rupture leading to the development of bicipital masses occurred in a 6-yr-old boy with the systemic form of juvenile rheumatoid arthritis. Observations made during the rapid evolution of the masses included early physical findings in the proximal upper arm which suggested a malignancy. An unusual hemorrhagic sign appeared in the cease of the elbow. A sequence of events is postulated to explain the course of development of these masses.
mesh_terms: D001132:Arm; D001171:Arthritis, Juvenile / Q000150:complications*; D002675:Child, Preschool; D006470:Hemorrhage / Q000209:etiology*; D006801:Humans; D007592:Joint Diseases / Q000209:etiology; D008297:Male; D012008:Recurrence; D012422:Rupture, Spontaneous; D012785:Shoulder Joint; D013581:Synovial Cyst / Q000209:etiology*; D013583:Synovial Membrane