title: CT evaluation of congenital and acquired abnormalities of the azygos system.
abstract: Congenital and acquired abnormalities may alter the anatomy, size, or position of the azygos system. Computed tomography is often able to depict these abnormalities and in many cases indicate the cause. In this article, the normal anatomy of the azygos system is discussed and examples of congenital and acquired abnormalities are presented.
authors.affiliation: Department of Radiology, Loyola University Medical Center, Maywood, IL 60153.
authors.forename: C M
authors.initials: CM
authors.lastname: Dudiak
authors.forename: M C
authors.initials: MC
authors.lastname: Olson
authors.forename: H V
authors.initials: HV
authors.lastname: Posniak
mesh_terms: D001401:Azygos Vein / Q000002:abnormalities / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D013909:Thorax / Q000098:blood supply; D014057:Tomography, X-Ray Computed / Q000379:methods; D014652:Vascular Diseases / Q000000981:diagnostic imaging; D014682:Vena Cava, Inferior / Q000002:abnormalities / Q000000981:diagnostic imaging