title: Pelvic retroperitoneal leiomyoma.
abstract: Primary retroperitoneal leiomyomas are a rare and unusual differential diagnosis in the acute abdomen. A 26-year-old woman presented with chronic constipation and acute abdominal pain. The diagnostic workup included contrast computer tomography, transabdominal ultrasonography, and colonoscopy that revealed an 8-cm homogeneous pelvic tumor with rectal compression. Retroperitoneal leiomyoma was suspected on imaging studies and finally confirmed after tumor excision and immunohistochemical staining.
authors.affiliation: Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Taiwan.
authors.forename: Hui-Wen
authors.initials: HW
authors.lastname: Lin
authors.forename: Wei-Chih
authors.initials: WC
authors.lastname: Su
authors.forename: Ming-Song
authors.initials: MS
authors.lastname: Tsai
authors.forename: Mei-Leng
authors.initials: ML
authors.lastname: Cheong
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology*; D000328:Adult; D002908:Chronic Disease; D003113:Colonoscopy; D003248:Constipation / Q000209:etiology; D003251:Constriction, Pathologic / Q000209:etiology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007813:Laparotomy; D007889:Leiomyoma / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010386:Pelvic Neoplasms / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012007:Rectum / Q000473:pathology; D012187:Retroperitoneal Space; D014057:Tomography, X-Ray Computed