Figure 516

The etiology of postrenal failure involves obstruction at various anatomic sites by tumors of the urinary tract or surrounding tissues. Some of the more common causes of bladder neck obstruction in the cancer patient include prostatic hypertrophy [43] and prostatic or bladder cancer [44]. Postrenal acute renal failure may also be produced by bilateral obstruction of both ureters (or unilateral ureteral obstruction in the presence of a single kidney). This may be caused by invasion of the ureters by bladder neoplasms or, more commonly, by retroperitoneal spread of malignancies, particularly of colon, prostate, bronchus, or breast origin.

Nodal obstruction

Uterus

Stricture

Bladder

Uterus

Nodal obstruction

Stricture

Bladder

Vesicovaginal fistula
0 0

Post a comment