title: Retrovesical desmoplastic small round cell tumor in a patient with urinary frequency.
abstract: A 21-year-old man with urological symptoms was found to have a large abdominal tumor in the retrovesical space between the bladder and the rectosigmoid colon. Radiologic findings revealed little evidence confirming the diagnosis. A transrectal biopsy failed to disclose the histopathologic origin of the tumor. An exploratory laparotomy with a complete surgical resection was impossible, so a wedge biopsy was performed. Combined histologic and immunohistochemical findings revealed the features of desmoplastic small round cell tumor (DSRCT). Despite subsequent multi-agent chemotherapy, the patient died as a result of the growing tumor and liver metastasis. There have been only two prior reports of this neoplasm in the urological literature.
authors.affiliation: Department of Urology, Osaka University Medical School, Osaka, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Murosaki
authors.forename: K
authors.initials: K
authors.lastname: Matsumiya
authors.forename: Y
authors.initials: Y
authors.lastname: Kokado
authors.forename: T
authors.initials: T
authors.lastname: Yoshioka
authors.forename: Y
authors.initials: Y
authors.lastname: Yasunaga
authors.forename: K
authors.initials: K
authors.lastname: Aozasa
authors.forename: A
authors.initials: A
authors.lastname: Okuyama
mesh_terms: D000008:Abdominal Neoplasms / Q000150:complications / Q000473:pathology*; D000328:Adult; D006801:Humans; D008297:Male; D001743:Urinary Bladder; D014555:Urination Disorders / Q000209:etiology