Patients with Metastatic or Locally Advanced Bladder Cancer Not Undergoing Systemic Oncological Treatment—Characteristics and Long-Term Outcome in a Single-Center Danish Cohort

Our study found that a significant amount of patients in a cohort of suspected la/mBC not undergoing treatment either received oncological treatment or did not have la/mBC, demonstrating a misclassification in the system. This should be taken into consideration when evaluating data about survival time for this patient group. The poorest survival of untreated la/mBC is associated with a high tumor burden and specifically liver metastasis.