Survival patterns after perioperative treatment escalation and cystectomy for synchronous oligometastatic bladder cancer (M1a/M1b) - a population-based series.

Background: The role of cystectomy in synchronous oligometastatic bladder cancer is unclear.

Objective: To describe a population-based consecutive cohort with primary oligometastatic bladder cancer (M1a or M1b) treated with curative intent.  Methods: Twenty consecutive patients with primary stage M1a or M1b bladder cancer subjected to induction chemotherapy and radical cystectomy 2013-2024 in the Southern healthcare region were identified in the Swedish National Register for Urinary Bladder Cancer.