Significant methodologic variations in calculating renal function changes following kidney tumor surgery: A quality reporting issue?

Renal tumor surgery places patients at increased risk for chronic kidney disease (CKD). Accurate quantification of kidney function changes before and after surgery is essential to determine the magnitude of decline attributable to an index procedure. Current literature, however, highlights heterogeneity and inconsistencies in measurement techniques thereby contributing to ambiguity amongst studies. Further efforts are necessary to standardize reporting of kidney function outcomes related to renal surgery.