Quantitative Evaluation of Renal Parenchymal Mass With sup 99m Technetium Dimercapto-Succinic Acid Scintigraphy After Nephrolithotomy

ABSTRACTPurpose: We detected renal parenchymal damage after nephrolithotomy.Materials and Methods: We studied 12 patients with renal stones treated with nephrolithotomy. Renal function was determined with serum blood urea nitrogen (BUN) and creatinine values, and 99mtechnetium dimercapto-succinic acid scintigraphy of renal parenchymal tissue was performed before, and 7 days and 3 months after nephrolithotomy. Qualitative and quantitative analyses were done with the Wilcoxon signed rank test.Results: There was no visual difference in size and appearance of the nephrotomy site between preoperative and postoperative visual scintigraphic evaluations. Quantitative data did not reveal any significant difference between kidneys with and without a nephrotomy incision (p>0.05), as well as between nephrotomy regions and intact parenchyma within the same kidney (p>0.05) 3 months after nephrolithotomy. There was no significant difference in serum BUN and creatinine levels between values preoperatively and 3 months po...