title: Mediastinal mature teratoma with rupture into pleural cavity due to blunt trauma.
abstract: We report a rare case of mediastinal mature teratoma with rupture due to blunt trauma. A 15-year-old boy had received a strong head-butt in the left upper chest wall and was admitted with the sudden onset of left-sided severe chest pain and dyspnea. Chest computed tomography (CT) scan on admission revealed a heterogeneous mass lesion in the anterior mediastinum. The contrast-enhanced CT scans obtained 2 days after admission showed not only mediastinal mass lesion but also left pleural effusion. On the radiologic finding at 5 months later, the lesion became larger and was thought to be a typical mediastinal mature teratoma. The patient underwent extirpation of the tumor. Microscopically, the tumor was typically composed of adult-type tissues and was confirmed to be mature teratoma.
authors.affiliation: Department of Thoracic Surgery, Kofu Municipal Hospital, Kofu, Japan. miyazawa@kmh.kofu.yamanashi.jp
authors.forename: Masahisa
authors.initials: M
authors.lastname: Miyazawa
authors.forename: Kazuo
authors.initials: K
authors.lastname: Yoshida
authors.forename: Kazunori
authors.initials: K
authors.lastname: Komatsu
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Haba
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000150:complications*; D035422:Pleural Cavity; D012422:Rupture, Spontaneous / Q000209:etiology; D013724:Teratoma / Q000150:complications*; D014949:Wounds, Nonpenetrating / Q000150:complications*