Published online Oct 16, 2022. doi: 10.12998/wjcc.v10.i29.10728
Peer-review started: May 31, 2022
First decision: August 4, 2022
Revised: August 18, 2022
Accepted: September 7, 2022
Article in press: September 7, 2022
Published online: October 16, 2022
Tumors originating from the posterior bladder wall can be challenging to dia
A 29-year-old woman with a uterine fibroid incidentally found at a regular checkup was referred to our hospital. Based on magnetic resonance imaging, either urinary bladder leiomyoma or protrusion of pedunculated uterine cervical fibroid into the bladder was suspected. This leiomyoma in the trigone of the bladder was completely excised by laparotomy, and the patient was discharged without complication. Follow-up outpatient ultrasonography identified tumor recurrence after four years. As focal atypia was identified previously, laparotomy was performed to confirm the pathology. A round solid mass was resected from the posterior bladder wall without injuring either ureteric orifice. This tumor was pathologically diagnosed as a leiomyoma without atypia. Three-year follow-up ultrasonography has revealed no recurrence.
Atypical leiomyoma in bladder trigone is rare and could be easily mistaken for fibroid in the uterine cervix. To confirm histopathology, surgical excision is mandatory and regular follow-up is necessary to detect recurrence.
Core Tip: Diagnosis of a tumor originating from the bladder trigone is challenging because it may mimic a mass from the uterine cervix. Magnetic resonance imaging is considered superior to computed tomography or ultrasonography for assessing bladder leiomyoma. Leiomyoma in bladder trigone requires caution during surgery because it can cause damage to the adjacent ureter. Surgical removal is mandatory for histopathological confirmation since it can be atypical fibroids or sarcomas. Regular follow-up is essential to detect recurrence.