Pseudocysts of the humerus.
Two patients are described who had areas of rarefaction in the humeral heads that were biopsied and found to be normal bone. Almost all humeral heads have an area of localized rarefaction laterally, and when very pronounced this can be confused with a lytic lesion. These pseudocysts are so radiographically characteristic that they should not be biopsied.
D000328:Adult; D001847:Bone Diseases / Q000000981:diagnostic imaging; D003560:Cysts / Q000000981:diagnostic imaging*; D006801:Humans; D006811:Humerus / Q000000981:diagnostic imaging*; D008297:Male; D011859:Radiography