Uterine perforation with omentum incarceration after dilatation and evacuation/curettage: magnetic resonance imaging findings.

Introduction: Cervical dilatation and/or uterine evacuation and curettage (D/E&C) is the most commonly performed and safest gynecological procedure. Although procedure-related uterine perforation is rare, this condition may require surgical intervention. Ultrasound examination and computed tomography are useful for diagnosing such perforations with incarceration of an intra-abdominal organ. However, the use of magnetic resonance imaging (MRI) for detecting postabortal uterine damage has seldom been discussed in the literature.

Case Report: A 31-year-old woman was referred to our department for lower abdominal pain and a small amount of vaginal bleeding 28 days after D/E&C for a missed abortion. Transvaginal ultrasound examination showed the presence of a hyperechogenic structure in the anterior wall of the uterine body, which was verified to be fatty tissue by MRI, particularly on the fat-suppressed T1-weighted images. An emergency laparotomy showed a uterine perforation with omentum incarceration. After dissecting the omental loop, the uterine perforation site was incised, and the involved omental tissue was debrided appropriately.

Discussion: To our knowledge, this is the first report wherein MRI was used for the detection of incarcerated omental fat within the uterus. Delayed presentation of uterine perforation may be observed 1 month or more after D/E&C, although such a finding is extremely rare. Therefore, postabortal follow-up bimanual vaginal examination using transvaginal ultrasonography is recommended. The current study indicates the usefulness of MRI when myometrial perforation with or without incarceration of an extrauterine organ is suspected.