CT Features of Adnexal Torsion

Nurith Hiller 1 ; Liat Appelbaum 1 ; Natalia Simanovsky 1 ; Ahinoam Lev-Sagi 2 ; Dvora Aharoni 3 ; and Tamar Sella 1

1 Department of Radiology, Hadassah-Hebrew University Medical Center, PO Box 12227, Jerusalem, Israel, 91121.
2 Department of Gynecology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
3 Department of Radiology, Shaare Zedek Medical Center, Jerusalem, Israel.
Received January 15, 2006; accepted after revision October 31, 2006.

OBJECTIVE: Adnexal torsion is most commonly a clinical diagnosis, often aided by sonographic findings. At times, the clinical presentation can mimic nongynecologic causes of acute lower abdominal pain. In these cases, CT may be the initial imaging study. The purpose of this study was to define the CT features associated with adnexal torsion.

CONCLUSION: On CT, a well-defined adnexal mass abnormally located in the pelvis with ipsilateral deviation of the uterus in a woman or girl with lower abdominal pain should raise the suspicion of adnexal torsion. Inflammatory signs on CT suggest the presence of necrosis.