PURPOSE: To evaluate the prevalence of baseline chronic kidney disease (CKD) in a large cohort of patients with renal masses in a single Chinese institution. Estimated glomerular filtration rate (eGFR) and CKD stage are more clinically relevant to predict the risk of morbidity and mortality in patients after nephrectomy. But, sCr reflects renal function poorly. METHODS: We retrospectively identified patients undergoing kidney surgery between January 2002 and June 2012. eGFR was calculated using the modification of diet in renal disease formulas modified based on Chinese people. CKD stages I–V were defined using the National Kidney Foundation definitions. RESULTS: A total of 2769 patients had adequate data available to calculate a preoperative eGFR (mL/min/1.73m2) with renal cancer confirmed by pathology. Of all patients, 97.7 % awaiting surgery at our institution had a “normal” baseline sCr (≤1.4 mg/dL), and 3.2 % of patients had CKD stage III or worse. Of the 401 patients ≥70 years old, 16.7 % (67/401) had CKD stage III. CONCLUSION: Many patients with a seemingly normal sCr have CKD stage III or worse, especially in patients over 70 years old. Given the high prevalence of baseline CKD in patients with renal cancer, it is important to preserve renal parenchyma when treating them surgically.
PURPOSE: To evaluate the prevalence of baseline chronic kidney disease (CKD) in a large cohort of patients with renal masses in a single Chinese institution. Estimated glomerular filtration rate (eGFR) and CKD stage are more clinically relevant to predict the risk of morbidity and mortality in patients after nephrectomy. But, sCr reflects renal function poorly. METHODS: We retrospectively identified patients undergoing kidney surgery between January 2002 and June 2012. eGFR was calculated using the modification of diet in renal disease formulas modified based on Chinese people. CKD stages I–V were defined using the National Kidney Foundation definitions. RESULTS: A total of 2769 patients had adequate data available to calculate a preoperative eGFR (mL/min/1.73m2) with renal cancer confirmed by pathology. Of all patients, 97.7 % awaiting surgery at our institution had a “normal” baseline sCr (≤1.4 mg/dL), and 3.2 % of patients had CKD stage III or worse. Of the 401 patients ≥70 years old, 16.7 % (67/401) had CKD stage III. CONCLUSION: Many patients with a seemingly normal sCr have CKD stage III or worse, especially in patients over 70 years old. Given the high prevalence of baseline CKD in patients with renal cancer, it is important to preserve renal parenchyma when treating them surgically.
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