title: Idiopathic saccular azygos vein aneurysm.
abstract: We present a case of asymptomatic saccular aneurysm of the azygos vein. This abnormality is exceedingly rare. Dynamic computed tomography revealed strong enhancement of the mass, suggesting a vascular structure, which was very important for preoperative diagnosis. It is unclear whether the mass should be resected if the preoperative diagnosis has been made and the mass is not so large.
authors.affiliation: Department of Thoracic Disease, Hokkaido Tomakomai Domestic Hospital, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Watanabe
authors.forename: K
authors.initials: K
authors.lastname: Kusajima
authors.forename: N
authors.initials: N
authors.lastname: Aisaka
authors.forename: H
authors.initials: H
authors.lastname: Sugawara
authors.forename: K
authors.initials: K
authors.lastname: Tsunematsu
mesh_terms: D000783:Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001401:Azygos Vein / Q000000981:diagnostic imaging / Q000473:pathology*; D001987:Bronchiectasis / Q000000981:diagnostic imaging; D001991:Bronchitis / Q000000981:diagnostic imaging; D003371:Cough / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D017548:Echocardiography, Transesophageal; D005260:Female; D006801:Humans; D008875:Middle Aged; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed