Treatments and survival outcomes of patients with synchronous and metachronous metastatic bladder cancer: A population-based nationwide cohort study

Patient populations with smBC and early and late mmBC showed moderate differences in patient or disease characteristics that may be of clinical relevance. Many patients were unable to receive systemic treatment, with only small differences between groups, resulting from prior treatment, emphasizing the unmet need among both smBC and mmBC patients. Patients with mBC have a poor prognosis, irrespective of time to metastasis with limited OS differences.