title: Thrombosed iliac venous aneurysm: a rare form of presentation of a congenital anomaly of the inferior vena cava.
abstract: Aneurysms of the iliac veins are extremely rare. We report a case of a 51-year-old male who was admitted for swelling of the lower right limb. Sonography and ascending phlebogram showed a complete occlusion of the right femoropopliteal veins, both iliacs and the inferior vena cava (IVC). A large collateral circulation throughout the paravertebral plexus and azygos system was also observed. The CT scan revealed a 5 x 9 cm thrombosed aneurysm of the right external iliac vein and a congenital hypoplasia of the infrarenal IVC. Anticoagulant treatment and compression with elastic stocking was started. The 3-month follow-up showed mild residual edema of the right lower limb. The literature on this pathology is extensively reviewed.
authors.affiliation: Vascular Surgery Department, Hospital de Cruces, Barakaldo, Spain. august.ysa@osakidetza.net
authors.forename: August
authors.initials: A
authors.lastname: Ysa
authors.forename: Maite R
authors.initials: MR
authors.lastname: Bustabad
authors.forename: Amaia
authors.initials: A
authors.lastname: Arruabarrena
authors.forename: Eduardo
authors.initials: E
authors.lastname: Pérez
authors.forename: Estepan
authors.initials: E
authors.lastname: Gainza
authors.forename: Juan Antonio García
authors.initials: JA
authors.lastname: Alonso
mesh_terms: D003097:Collateral Circulation; D006801:Humans; D017543:Iliac Aneurysm / Q000150:complications / Q000000981:diagnostic imaging / Q000209:etiology* / Q000503:physiopathology; D007084:Iliac Vein / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014682:Vena Cava, Inferior / Q000002:abnormalities*; D020246:Venous Thrombosis / Q000150:complications* / Q000000981:diagnostic imaging / Q000503:physiopathology