The effect of hypothermic anatrophic nephrolithotomy was evaluated in 13 patients by comparing preoperative and postoperative renal quantitative scintillation camera studies. Total renal function as measured by effective renal plasma flow remained normal postoperatively. However, the operated kidney had a significant loss of function with a proportionate compensatory hypertrophy of the contralateral kidney. This finding explains the normal total renal function, the good end result of the operation being stable renal function if stones do not recur.
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