(redirected from ureteral obstruction)
Also found in: Medical.


 (yo͝o-rē′tər, yo͝or′ĭ-tər)
The long, narrow duct that conveys urine from the kidney to the urinary bladder or cloaca.

[New Latin ūrētēr, from Greek ourētēr, from ourein, to urinate.]

u·re′ter·al, u′re·ter′ic (yo͝or′ĭ-tĕr′ĭk) adj.


adj ureteral
References in periodicals archive ?
Based on these findings, the authors calculated that cystoscopy at the time of vaginal surgery for anterior and/or apical prolapse has a sensitivity of 94.4% and a specificity of 99.5% for detecting ureteral obstruction, the positive predictive value of cystoscopy with the use of indigo carmine for detection of ureteral obstruction is 91.9% and the negative predictive value is 99.7%.
Urinary transfer from kidney to bladder may be under risk of arrest due to complete ureteral obstruction (4).
[2] A contributing factor such as ureteral obstruction may cause renal dysfunction and render the kidneys less effective in concentrating antibiotics in the urine.
Ureteral obstruction is characterized by inflammatory cell infiltration and by the accumulation primarily of macrophages in the obstructed kidney, accompanied with increased apoptosis and oxidative stress [1].
Ureteral obstruction and urinary leak represent the most frequent urological complications after renal transplantation [1].
The most important finding of this study was that, in cases of unilateral ureteral obstruction, renal PW was decreased over time in spite of indwelling ureteral stent, suggesting that ureteral stents might not be as efficacious in preserving renal function as most clinicians tend to believe.
Case report: bilateral ureteral obstruction secondary to Aspergillus bezoar.
During this procedure it was noted that both of the ureteral orifices were extremely large and easily refluxed, so much so that a 36 French balloon dilator was required for ureteral obstruction during instillation.
Another study reported the first documented use of SurgiWrap to wrap the ureters for minimizing the future possibility of recurrent fibrosis, compression, and ureteral obstruction. [sup][33] Haddad et al .
Currently scientific literature is short in ureteral obstruction models that accurately reproduce the clinical and microscopic features of this infirmity [10-12].
Acute ureteral obstruction: value of secondary signs of helical unenhanced CT.