title: Mature teratoma of the posterior mediastinum.
abstract: The vast majority of germ cell tumors in the thorax arise at or near the thymus. We report a case of a 41-year-old man with mature teratoma of the posterior mediastinum. He was asymptomatic and was incidentally found to have a posterior mediastinal mass. Computed tomography was helpful in suggesting a diagnosis of mature teratoma by demonstrating the presence of fat and calcification. The differential diagnosis included neurogenic tumors, liposarcoma, and extramedullary hematopoiesis.
authors.affiliation: Department of Radiology, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-shi, Ibaraki-ken 305, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kurosaki
authors.forename: Y O
authors.initials: YO
authors.lastname: Tanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Itai
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004724:Endoscopy / Q000379:methods; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D013902:Radiography, Thoracic; D013724:Teratoma / Q000000981:diagnostic imaging* / Q000601:surgery; D013906:Thoracoscopy; D014057:Tomography, X-Ray Computed