Impact of body mass index on the oncological outcomes of patients with upper and lower urinary tract cancers treated with radical surgery: A multi‐institutional retrospective study

To evaluate the impact of body mass index (BMI) on the oncological outcomes of urothelial carcinoma (UC) patients.We retrospectively analyzed data from 818 patients with upper tract urothelial cancer (UTUC) and bladder cancer (BC) who were treated with radical nephroureterectomy (RNU) or radical cystectomy (RC) between 1990 and 2015 at six different institutions in Japan. Patients with distant metastasis at diagnosis and those who received...