Patients baseline characters
micropapillary bladder cancer
According to the inclusion criteria, a total of 668 micropapillary patients were retrospectively enrolled from SEER (n = 627) and tertiary centers (n = 41). By the end of follow-up, a total of 360 of the 627 people enrolled from SEER database had died, of which 280 died from micropapillary bladder cancer and the remaining 80 died from other causes. Details on the demographic information, clinicopathological parameters, and treatments in the training set, internal validation set, and external validation set were shown in Table Characteristics of patientsOtherIThe cancer-specific survival of micropapillary bladder cancer