ureteral obstruction

ureteral

pertaining to or emanating from the ureter.

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ureteral calculus

ureterolith.

ureteral distention

ureterectasis.

ureteral duplication

a rare anomaly in animals in which there is more than one ureter from a kidney.

ureteral ectopia

see ectopic ureter.

ureteral hypoplasia

usually segmental underdevelopment of the ureter causing stenosis and hydronephrosis.

ureteral obstruction

may be caused by intraluminal lesions, e.g. urolithiasis, or as part of pyelonephritis or by external compression of the ureter or as a congenital defect. Sudden blockage causes acute abdominal pain that lasts for several hours. Subsequently or if obstruction develops slowly the kidney on the affected side becomes hydronephrotic; if bilateral, renal failure follows.

ureteral reflux

see vesicoureteral reflux.

ureteral rupture

rupture usually results from trauma; leads to urinoma or peritoneal accumulation of urine.

ureteral stasis

synonymous with obstruction.

ureteral valves

a rare anomaly that may be a cause of urinary incontinence.

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ureteral obstruction

Acute unilateral obstructive uropathy Urology A unilateral block of urine flow through the ureter of 1 kidney, resulting in a backup of urine, distension of the renal pelvis and calyces, and hydronephrosis Etiology Kidney stone, trauma, stricture in children–of one ureter causes acute unilateral obstructive uropathy; slow, progressive blockage causes chronic unilateral obstructive uropathy; either may result in permanent damage and failure of one kidney and HTN, resulting in the so-called Goldblatt kidney, which is usually asymptomic–the remaining kidney usually has functional reserve. See Goldblatt kidney, Reflux nephropathy.