title: Ovarian torsion: diagnostic features on CT and MRI with pathologic correlation.
abstract: OBJECTIVE
  The CT and MRI features of ovarian torsion are illustrated with gross pathologic correlation. Ovarian enlargement with or without an underlying mass is the finding most frequently associated with torsion, but it is nonspecific. A twisted pedicle, although not often detected on imaging, is pathognomonic when seen. Subacute ovarian hemorrhage and abnormal enhancement is usually seen, and both features show characteristic patterns on CT and MRI. Ipsilateral uterine deviation can also be seen.
  
  
  CONCLUSIONS
  Diagnostic pitfalls that may mimic ovarian torsion and observations for discriminating them are discussed.
authors.affiliation: Department of Radiology, Division of Abdominal Imaging and Intervention, Massachusetts General Hospital, Ellison 234, 55 Fruit St, Boston, MA 02114, USA.
authors.forename: Shauna
authors.initials: S
authors.lastname: Duigenan
authors.forename: Esther
authors.initials: E
authors.lastname: Oliva
authors.forename: Susanna I
authors.initials: SI
authors.lastname: Lee
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010049:Ovarian Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014102:Torsion Abnormality / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology
chemical_list: D003287:Contrast Media