title: CT of the urinary tract after abdominoperineal resection for rectal carcinoma.
abstract: Computed tomography (CT) after abdominoperineal (AP) resection for rectal carcinoma is a routine procedure for the detection of recurrent tumor and distal metastases. We reviewed sequential CT scans after AP resection in 52 patients in order to see whether the urinary tract as a neighboring organ is involved in recurrent malignancy. Bladder displacement in itself was not associated with hydronephrosis. Such hydronephrosis developed, however, in 14 patients--13 with a presacral mass, and one with retroperitoneal lymphadenopathy. In 23 of the 52 patients a presacral mass appeared, either fibrosis, infection, or recurrence. Severe hydronephrosis was found only with malignancy. We suggest that marked hydronephrosis associated with a presacral mass after AP resection is an indirect sign of malignancy.
authors.affiliation: Department of Diagnostic Imaging, Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.
authors.forename: S
authors.initials: S
authors.lastname: Apter
authors.forename: M
authors.initials: M
authors.lastname: Hertz
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Rubinstein
authors.forename: T
authors.initials: T
authors.lastname: Tishler
authors.forename: G
authors.initials: G
authors.lastname: Ben Ari
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005355:Fibrosis / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging* / Q000209:etiology; D008206:Lymphatic Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010502:Perineum / Q000601:surgery; D011183:Postoperative Complications / Q000000981:diagnostic imaging* / Q000209:etiology; D012004:Rectal Neoplasms / Q000601:surgery*; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D013530:Surgical Wound Infection / Q000000981:diagnostic imaging / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology