title: Retroperitoneal schwannoma mimicking uterine myoma.
abstract: 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.
authors: Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan.
authors: Ching-Hui
authors: CH
authors: Chen
authors: Cherng-Jye
authors: CJ
authors: Jeng
authors: Wei-Min
authors: WM
authors: Liu
authors: Jenta
authors: J
authors: Shen
mesh_terms: 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