© 2013 Hainan Medical College.A 52 year old woman complaining of vaginal vault eversion applied to our outpatient clinic. In her medical history, she had underwent total abdominal hysterectomy for uterin leiomyoma 15 years ago. Physical examination revealed a firm, left sided pelvic mass and uterine vault prolapse. Laparotomy and frozen section were performed for the suspected mass. A solid mass arising from the left round ligament was observed. This mass was completely removed and diagnosed as leiomyoma on frozen section. Although adnexal masses are more common causes of pelvic masses in women, leiomyomas should be kept in mind in the differential diagnosis of pelvic masses even in patients with the history of hysterectomy.