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  • Title: Prediction of renal function after nephroureterectomy in patients with upper tract urothelial carcinoma.
    Author: Hashimoto T, Ohno Y, Nakashima J, Gondo T, Nakagami Y, Namiki K, Horiguchi Y, Yoshioka K, Ohori M, Tachibana M.
    Journal: Jpn J Clin Oncol; 2015 Nov; 45(11):1064-8. PubMed ID: 26355160.
    Abstract:
    OBJECTIVE: The estimated glomerular filtration rate is significantly decreased after nephroureterectomy. Deteriorating renal function likely affects the eligibility for cisplatin-based chemotherapy in patients with upper tract urothelial carcinoma. The present study was undertaken to identify preoperative factors for the prediction of postoperative renal function and develop a prediction model. METHODS: Between June 1996 and January 2014, 110 patients who underwent radical nephroureterectomy at our institution were analyzed in this study. The estimated glomerular filtration rate was calculated using the Modification of Diet in Renal Disease study equation. Univariate linear regression analyses were performed to investigate the correlation between postoperative estimated glomerular filtration rate and preoperative variables. A stepwise multivariate linear regression analysis was performed to identify independent predictors of postoperative estimated glomerular filtration rate. RESULTS: Comparison of preoperative and postoperative estimated glomerular filtration rate for each patient showed a median difference of 13.1 ml/min/1.73 m(2). The postoperative estimated glomerular filtration rate was significantly lower than the preoperative estimated glomerular filtration rate (P < 0.001). On univariate analysis, age and preoperative estimated glomerular filtration rate were significantly correlated with postoperative estimated glomerular filtration rate. On multivariate analysis, age, preoperative estimated glomerular filtration rate and the presence of hydronephrosis were independent predictive factors of postoperative estimated glomerular filtration rate. The predicted postoperative estimated glomerular filtration rate, which was calculated using these independent factors, showed a significant correlation with the observed postoperative estimated glomerular filtration rate (correlation coefficient = 0.7533). CONCLUSIONS: Age, preoperative estimated glomerular filtration rate and the presence of hydronephrosis were independent predictors of postoperative estimated glomerular filtration rate in patients with upper tract urothelial carcinoma treated with radical nephroureterectomy. The predicted postoperative estimated glomerular filtration rate based on these factors may be useful for choosing alternative management strategies such as neoadjuvant chemotherapy for patients with upper tract urothelial carcinoma.
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