title: Peripelvic extravasation, urinoma formation and tumor obstruction of the ureter.
abstract: We report 4 cases of peripelvic extravasation caused by tumor obstruction of the ureter. A urinoma developed in 3 of the 4 cases. Review of the literature reveals only 5 previously reported cases of peripelvic extravasation secondary to tumor obstruction of the urinary tract. We discuss the mechanics of peripelvic extravasation and urinoma formation, and conclude that tumor obstruction of the ureter must be considered in all cases of peripelvic extravasation.
mesh_terms: D000368:Aged; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging; D007044:Hysterectomy; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging; D008297:Male; D008408:Mastectomy; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging; D011859:Radiography; D012186:Retroperitoneal Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging*; D001749:Urinary Bladder Neoplasms / Q000000981:diagnostic imaging; D014548:Urinary Fistula / Q000000981:diagnostic imaging*; D014556:Urine