Ureteral involvement by metastatic disease

Pseudodiverticulosis: Unusual appearance for metastases to the ureter

“…Wasserman: Metastatic Ureteral Pseudodiverticulosis moplasia leading to obstruction [4,5]. Our patients experienced no urinary symptoms or signs in life because tumor involvement of the advantitia and ureteral wall was microscopic, and did not cause desmoplasia or ureteral obstruction.…”

“…These patients are almost always free of urinary tract symptoms or signs in life [3]. Excellent reviews of the pathways of involvement of the ureters by metastatic malignant disease are available [4,5]. The natural history and clinical findings will not be discussed here in detail.…”

“…In almost every case these findings are associated with hydroureter or hydronephrosis [4][5][6][7][8][9]. There have been no reports of diverticulum-like patterns in living patients or incidental postmortem studies.…”

“…The radiographic findings for ureteral metastases due to lymphatic or hematogenous spread have been reported to show intraluminal filling defects, single or multiple strictures including encasement [4], irregularities [4], or beaded narrowing (alternating areas of narrowing and dilation) [7,9]. In almost every case these findings are associated with hydroureter or hydronephrosis [4][5][6][7][8][9].…”

Oblique plain radiographs are useful for detecting opaque presacral ureteral calculi.

“…All had unilateral renal colic, three on the left side and one on the right side. All had is particularly true of patients with obstruction of the presacral portion of the ureter, where ureteral obstruction due to causes other than calculi are frequent [6,7]. Our experience with these cases suggests that an ipsilateral posterior oblique plain abdominal radiograph ofthe supine patient may be useful in detecting a radiopaque ureteral calculus in the presacral portion of the ureter when a calculus is not identified on the anteroposterior view.…”