The association of aorto-iliac aneurysms with ureteral obstruction

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.…”

Ureteric Obstruction Caused by Aneurysm of the Hypogastric Artery

“…The obstruction may result from the aneurysm or occur secondary to peri-aneurysmal fibrosis encasing the ureter. The radiologic features may mimic retroperitoneal fibrosis (7). Ultrasonography, IVU and CT are very useful for confirming the diagnosis.…”