[Paraurethral Leiomyoma in a Female Patient who Had Clinical Symptoms with Increase of Tumor Volume: A Case Report].

A 34-year-old woman underwent total hysterectomy for management of uterine leiomyoma. At the same time, a paraurethral tumor (2 cm in size) was diagnosed based on magnetic resonance imaging (MRI). However, the patient was not treated for the tumor considering its small size. Eight years later, the patient was referred to our institution with a chief complaint of urethral bleeding. Computed tomography revealed a paraurethral mass at the same location, which was 13 cm in size. A percutaneous needle biopsy was performed and the tumor was diagnosed as leiomyoma. Tumor extirpation was performed and immunohistochemical analysis of the specimen demonstrated positive estrogen and progesterone receptors. Recurrence was not observed on MRI taken 6 months after the surgery. Paraurethral leiomyoma is rare, but relatively common in young women.