Reevaluation of Large Pelvic Masses after Inconclusive MRIs: A Case Report

The lack of a classification system addressing the size of pelvic masses challenges their evaluation. The American College of Obstetricians and Gynecologists recommends using an ultrasound (US) as the first-line modality, followed by magnetic resonance imaging (MRI). However, these do not guarantee optimal assessment. We present a case of a 36-year-old woman with a large pelvic mass of unknown etiology, after being evaluated with US, a computed tomography scan, and MRI. A reassessment by a US-specialized radiologist found a stalk (≥2.0 cm) with internal bridging vessels at the uterine fundus. The mass was identified as a pedunculated myoma and removed en bloc during a total abdominal hysterectomy with a bilateral salpingectomy and an oophoropexy. A reassessment by a US-specialized radiologist could be beneficial for cases of pelvic masses with unknown etiology after an evaluation with multiple imagining studies. These specialists possess extensive knowledge and vast expertise, potentially allowing US evaluations to be more effective than MRIs.