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dc.contributor.authorDiego Aguilar Palaciosen_US
dc.contributor.authorElvis R. Caraballoen_US
dc.contributor.authorHajime Tanakaen_US
dc.contributor.authorYanbo Wangen_US
dc.contributor.authorChalairat Suk-Ouichaien_US
dc.contributor.authorYunlin Yeen_US
dc.contributor.authorLin Linen_US
dc.contributor.authorJianbo Lien_US
dc.contributor.authorRobert Abouassalyen_US
dc.contributor.authorSteven C. Campbellen_US
dc.contributor.otherThe First Bethune Hospital of Jilin Universityen_US
dc.contributor.otherSun Yat-Sen University Cancer Centeren_US
dc.contributor.otherCleveland Clinic Foundationen_US
dc.contributor.otherFaculty of Medicine, Siriraj Hospital, Mahidol Universityen_US
dc.contributor.otherTokyo Medical and Dental Universityen_US
dc.identifier.citationThe Journal of urology. Vol.204, No.1 (2020), 42-49en_US
dc.description.abstractPURPOSE: Loss of renal function remains a major limitation of radical nephrectomy. The extent of renal functional compensation by the preserved kidney after radical nephrectomy has not been adequately studied in this elderly population with comorbidities. MATERIALS AND METHODS: A total of 273 patients treated with radical nephrectomy without end stage renal disease with available preoperative nuclear renal scans were included in the analysis. Renal functional compensation was defined as percent change in estimated glomerular filtration rate of the preserved kidney after radical nephrectomy. Estimated glomerular filtration rate was calculated by the Chronic Kidney Disease-Epidemiology Collaboration formula up to 5 years postoperatively. Preoperative/postoperative parenchymal volumes of the preserved kidney were measured from cross-sectional imaging. Multiple regression was used to identify predictive factors for renal functional compensation. RESULTS: Median age was 67 years and 67% of the patients were male. Overall 70% had hypertension, 26% diabetes and 37% preexisting chronic kidney disease. Locally advanced (T3a or greater) tumors were found in 53% of cases. Renal functional compensation was observed at 2 weeks (median 10%) and increased during the first 3 months (median 26%) after radical nephrectomy. Functional stability was then observed to 5 years. Renal parenchymal volume increased a median of 10% at 3 to 12 months but in addition, the functional efficiency per unit of parenchymal volume also increased 8% (estimated glomerular filtration rate units/cm3 of parenchyma was 0.236 postoperatively vs 0.208 preoperatively, p=0.004). Age (-0.85, p <0.01), global preoperative estimated glomerular filtration rate (-0.28, p <0.01) and split renal function of the removed kidney (0.61, p <0.01) were independent predictors of renal functional compensation. CONCLUSIONS: Percent renal functional compensation after radical nephrectomy is greater in younger patients, when preoperative estimated glomerular filtration rate is lower and when the removed kidney has more robust function. Increases in measurable parenchymal mass and functional efficiency contribute substantially to renal functional compensation.en_US
dc.rightsMahidol Universityen_US
dc.titleCompensatory Changes in Parenchymal Mass and Function after Radical Nephrectomyen_US
Appears in Collections:Scopus 2020

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