Use of MRI for evaluation of retained uterine fundus mimicking a pelvic mass.

Increased use of less invasive hysterectomy techniques requires awareness of the unique potential complications they pose in patients with continued symptoms after surgery. Retained uterine fundus is rare after vaginal hysterectomy; only 2 other cases have been reported in the English literature. Magnetic resonance imaging (MRI) was not used preoperatively in either case. However, imaging evaluation, in particular with MRI because of its superior soft tissue resolution, can be helpful in suggesting the diagnosis. Herein is presented the case of a 40-year-old woman who had undergone vaginal hysterectomy several years previously, but was experiencing abdominal pain. MRI was performed, which revealed a supravesical mass. Visualization at MRI of intact round ligaments arising from the mass favored the diagnosis of retained uterine fundus and confirmed after surgical excision.