The aim is to evaluate and compare treatment strategies for non-muscle invasive bladder cancer. Furthermore, the impact of intravesical instillations on bladder function will be examined by urodynamic examination both prior to and following instillation therapy.

Inclusion Criteria:

• non-muscle invasive bladder tumour

Exclusion Criteria:

• more than one previous bladder tumour recurrence
• muscle invasive bladder cancer (at baseline or prior to inclusion)
• utilization of urinary catheter
• have had heart valve replacement performed
• pregnant or lactating

Patients diagnosed with primary non-muscle invasive bladder cancer or who are diagnosed with their first or second recurrence.