title: Aneurysmal bone cyst mimicking Ewing's sarcoma of the rib.
abstract: A cantaloupe-sized intrathoracic tumor destroying the eighth rib with a pleural effusion is ominous. This case of an aneurysmal bone cyst of a rib mimicking a malignant chest wall tumor was both interesting and instructive.
mesh_terms: D000293:Adolescent; D001845:Bone Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery*; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000601:surgery; D008297:Male; D011859:Radiography; D012272:Ribs / Q000000981:diagnostic imaging / Q000601:surgery*; D012512:Sarcoma, Ewing / Q000175:diagnosis*; D013899:Thoracic Neoplasms / Q000000981:diagnostic imaging; D013903:Thoracic Surgery; D013909:Thorax / Q000601:surgery