TY - BOOK AU - Deng, Tom AU - Krasnow, Ross TI - Neuroendocrine tumor causing ureteral obstruction in a patient with prior ileal conduit SN - 1195-9479 PY - 2021/// KW - *Hydronephrosis KW - *Neuroendocrine Tumors KW - *Ureter KW - *Ureteral Obstruction KW - *Urinary Bladder Neoplasms KW - *Urinary Diversion KW - Cystectomy/ae [Adverse Effects] KW - Humans KW - Hydronephrosis/co [Complications] KW - Hydronephrosis/su [Surgery] KW - Ileum/su [Surgery] KW - Neuroendocrine Tumors/co [Complications] KW - Neuroendocrine Tumors/su [Surgery] KW - Ureter/su [Surgery] KW - Ureteral Obstruction/et [Etiology] KW - Ureteral Obstruction/su [Surgery] KW - Urinary Bladder Neoplasms/co [Complications] KW - Urinary Bladder Neoplasms/pa [Pathology] KW - Urinary Bladder Neoplasms/su [Surgery] KW - Urinary Diversion/ae [Adverse Effects] KW - MedStar Washington Hospital Center KW - Pathology KW - Urology KW - Journal Article N2 - Acquired hydronephrosis following cystectomy and ileal conduit urinary diversion for bladder cancer is most commonly caused by stricture of the ureter or the ureteroenteric anastomosis. Nevertheless, malignant obstruction due to ureteral tumor recurrence must be ruled out. Neuroendocrine tumors of the ureter are extremely rare and an unlikely cause of hydronephrosis in this setting. We present the first reported case of a patient with a history of bladder cancer and an ileal conduit presenting with hydronephrosis secondary to an obstructing carcinoid tumor of the ureter ER -