Abstract
Sixty patients with different types of stents were investigated for vesicoureteral reflux, which was found in 61 % just after insertion and in 85% just before retrieval, a mean of 22 days later. Stents with a round cross section and multiple sideholes were more likely to cause reflux than were triangular stents without sideholes or square stents with fewer sideholes (90%, 66%, and 24%, respectively, immediately after insertion). Of the 51 patients with reflux, 15 (29%) complained of flank pain during micturition, whereas none of the nine patients without reflux had pain. Vesicoureteral reflux secondary to stenting can represent a clinical problem for patients who do not suffer from any other symptom.
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