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[99mTechnetium-diethylenetriaminepentaacetic acid renoscintigraphy as a measure of renal function and urodynamics after uretero-ileoceco-proctostomy].

Ten patients having a uretero-ileocecoproctostomy (ileocecorectal bladder) were evaluated by 99mtechnetium diethylenetriaminepantaacetic acid renoscintigraphy, which was repeated at an approximately 1 year interval in 7 patients. The computed total glomerular filtration rates at the 1st and 2nd surveys were 100 +/- 23.2 and 92.7 +/- 23.0 ml/min (mean +/- S.D.), respectively indicating a minimal change with no statistically significant difference. The normal or incompletely obstructive renogram patterns were consistent with the pyelographic findings in 27 of 28 renal units, and 5 of 6 renal units with dilated nonobstructive renograms subsequently became normal both on the renograms and pyelograms. Comparing the data in the 1st and 2nd surveys, the frequency of colonic reflux decreases from 8/10 to 3/7 of the patients, the rectal bladder capacity increased from 82 +/- 18.8% to 92 +/- 20.8% of the excreted urine, and the total residual urine rate decreased from 40.4 +/- 12.9% to 28.0 +/- 16.6% (p = 0.1298), respectively. The results indicate that the ileocecorectal bladder, though it has no antireflux mechanism against colonic regurgitation, well functions as an internal continent urinary reservoir. Also, since this comprehensive information is obtained by a single procedure, the radionuclide evaluation can be practiced as a cost-beneficial measure for follow-up of patients with urinary diversions.