title: Idiopathic accessory hemiazygos vein aneurysm with an incidental mediastinal mass.
abstract: We herein report the case of an idiopathic aneurysm of the accessory hemiazygos vein diagnosed by contrast-enhanced computed tomography (CT) and angiography. The patient was asymptomatic, and a posterior mediastinal mass was incidentally found on CT. Because endoscopic ultrasonography showed no thrombus formation in the aneurysm, the patient was therefore managed conservatively.
authors.affiliation: Department of Respiratory Medicine, Respiratory Center, Japan. yoichiimori@me.com
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Imori
authors.forename: Hajime
authors.initials: H
authors.lastname: Fujimoto
authors.forename: Shigeo
authors.initials: S
authors.lastname: Hanada
authors.forename: Hironori
authors.initials: H
authors.lastname: Uruga
authors.forename: Hisashi
authors.initials: H
authors.lastname: Takaya
authors.forename: Atushi
authors.initials: A
authors.lastname: Miyamoto
authors.forename: Nasa
authors.initials: N
authors.lastname: Morokawa
authors.forename: Noboru
authors.initials: N
authors.lastname: Shindo
authors.forename: Kazuma
authors.initials: K
authors.lastname: Kishi
mesh_terms: D000783:Aneurysm / Q000000981:diagnostic imaging*; D000792:Angiography; D001401:Azygos Vein / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D033162:Incidental Findings; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging*; D008482:Mediastinum / Q000000981:diagnostic imaging*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed