title: Torsion, infarction, and rupture of a nongravid uterus: a complication of a large ovarian cyst.
abstract: Torsion of a nongravid uterus is rare, as most cases of uterine torsion occur during pregnancy. We report a case of a large ovarian cyst causing uterine torsion, infarction, and rupture. A 57-year-old woman presented with acute-onset abdominal pain and increasing abdominal girth over the past year. Contrast-enhanced computed tomography (CT) demonstrated axial rotation and swirling of the uterus and the mesenteric fat, leading to a preoperative diagnosis of uterine torsion. Laparotomy confirmed that the uterine corpus had undergone a 180-degree axial rotation, and further revealed uterine wall infarction and rupture into the endometrium as well as partial decapitation of the uterus from the cervix. The swirled appearance of the uterus, radiologically similar to the "whirlpool sign" seen in bowel volvulus, is an important CT finding to recognize, especially in view of the risk of irreversible ischemic complications this uncommon entity may inflict on the uterus.
authors.affiliation: Department of Radiology, Keck School of Medicine, University of Southern California, 1200 N. State St, D&T 3D321, Los Angeles, CA, 90033, USA. felix.yap@med.usc.edu.
authors.forename: Felix Y
authors.initials: FY
authors.lastname: Yap
authors.affiliation: Department of Radiology, Keck School of Medicine, University of Southern California, 1200 N. State St, D&T 3D321, Los Angeles, CA, 90033, USA.
authors.forename: Randall
authors.initials: R
authors.lastname: Radin
authors.affiliation: Department of Radiology, Keck School of Medicine, University of Southern California, 1200 N. State St, D&T 3D321, Los Angeles, CA, 90033, USA.
authors.forename: Hisham
authors.initials: H
authors.lastname: Tchelepi
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007238:Infarction / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D008875:Middle Aged; D010048:Ovarian Cysts / Q000150:complications* / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014102:Torsion Abnormality / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D014591:Uterine Diseases / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D014597:Uterine Rupture / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery
chemical_list: D003287:Contrast Media
keywords: Computed tomography; Nongravid uterus; Ovarian cystadenoma; Uterine rupture; Uterine torsion; Whirlpool sign