Retroperitoneal schwannoma mimicking uterine myoma.
OBJECTIVE
Schwannomas rarely present as pelvic masses. Most of them have been previously examined in the pelvis, vagina, retroperitoneum, and mediastinum. We report a 44-year-old woman with a pelvic mass initially diagnosed as a uterine fibroid but subsequently proven to be a retroperitoneal cellular schwannoma.


METHODS
Histologic examination revealed the mass to be an Antoni A-dominated tumor that was S-100-positive, CD117-negative, and smooth muscle actin-negative. The patient underwent a total hysterectomy and removal of the tumor, and had no evidence of recurrence at 2 years' follow-up.


CONCLUSIONS
In this case, the treatment of choice was complete excision of the tumor, which was considered to be curative.
Chen
Ching-Hui
CH
Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan.
Jeng
Cherng-Jye
CJ
Liu
Wei-Min
WM
Shen
Jenta
J
D000328:Adult; D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007044:Hysterectomy; D007889:Leiomyoma / Q000175:diagnosis*; D009214:Myoma / Q000175:diagnosis*; D009442:Neurilemmoma / Q000175:diagnosis* / Q000601:surgery; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000601:surgery