title: An idiopathic azygos vein aneurysm mimicking a mediastinal mass.
abstract: Azygos vein aneurysms are very rare causes of mediastinal masses and are usually accidental findings on chest roentgenography. Most are detected in patients with portal hypertension or venous malformations. An idiopathic azygos vein aneurysm is assumed to be congenital and is much more exceptional. We present the case of a 76-year-old man who underwent excision of an idiopathic azygos vein aneurysm by video-assisted thoracoscopic surgery (VATS).
authors.affiliation: Department of Chest Surgery, Onga Nakama Medical Association, Onga Hospital, Onga-gun, Japan. Electronic address: y-ichiki@med.uoeh-u.ac.jp.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ichiki
authors.affiliation: Department of Surgery, Onga Nakama Medical Association, Onga Hospital, Onga-gun, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Hamatsu
authors.affiliation: Department of Emergency, Onga Nakama Medical Association, Onga Hospital, Onga-gun, Japan.
authors.forename: Taketoshi
authors.initials: T
authors.lastname: Suehiro
authors.affiliation: Department of Radiology, Onga Nakama Medical Association, Onga Hospital, Onga-gun, Japan.
authors.forename: Makiko
authors.initials: M
authors.lastname: Koike
authors.affiliation: Second Department of Surgery, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan.
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Tanaka
authors.affiliation: Department of Surgery, Onga Nakama Medical Association, Onga Hospital, Onga-gun, Japan.
authors.forename: Keizo
authors.initials: K
authors.lastname: Sugimachi
mesh_terms: D000368:Aged; D000783:Aneurysm / Q000175:diagnosis* / Q000601:surgery; D001401:Azygos Vein; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008477:Mediastinal Diseases / Q000175:diagnosis*; D020775:Thoracic Surgery, Video-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed; D014656:Vascular Surgical Procedures / Q000379:methods*