Investigation of estimated glomerular filtration rate and its perioperative change in patients with upper urinary tract urothelial carcinoma: A multi‐institutional retrospective study

Aim To investigate the association of perioperative estimated glomerular filtration rate (eGFR) with prognosis in patients with upper urinary tract urothoelial caicinoma (UTUC). Methods A total of 433 patients underwent radical nephroureterectomy with excision of the bladder cuff (RNU) at six hospitals affiliated with Kitasato University in Japan. Patients were divided into three groups each in terms of preoperative eGFR: normal eGFR (>60...