Round ligament fibroid: A case report and literature review.

Round ligament fibroids are rare, particularly in postmenopausal women, and can pose a diagnostic challenge due to their uncommon location and nonspecific presentation. We report the case of a 66-year-old postmenopausal woman in whom a right-sided round ligament fibroid was incidentally discovered during evaluation for rectal bleeding. CT angiography and MRI revealed a 3.5 cm lesion arising from the right round ligament; the patient had a history of hormone replacement therapy but no prior uterine fibroids. This case underscores the importance of including extrauterine fibroids in the differential diagnosis of pelvic masses in postmenopausal women and highlights the value of MRI in accurately localizing and characterizing such lesions.