title: Unusual presentation of an osteoid osteoma.
abstract: We present a case of osteoid osteoma of the humerus diagnosed after it presented clinically as impingement syndrome. Clinical and magnetic resonance imaging data supported impingement, but standard non-surgical treatment did not provide complete pain relief. Subacromial injection resolved the anterior shoulder pain and unmasked medial arm and axillary pain. Humerus X-rays revealed a lytic diaphyseal lesion, and en-bloc resection of the humeral mass diagnosed an osteoid osteoma. This case is unusual in that only 1% of osteoid osteomas present in the humeral shaft. The clinical features and presentation of impingement and osteoid osteoma are discussed.
authors: Orthopaedic Service, Landstuhl Regional Medical Center (U.S. Military), Germany.
authors: R
authors: R
authors: Marin
authors: P
authors: P
authors: Papierski
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010017:Osteoma, Osteoid / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010148:Intractable Pain / Q000209:etiology; D011859:Radiography; D012782:Shoulder / Q000000981:diagnostic imaging / Q000473:pathology