Hi,and sorry you and your dad have had to come to us. The definitive test to check on how deep the cancer has spread was the op carried out already by laser. This has removed the tumour but shows that cancerous cells have penetrated through part of the bladder wall. The chemo pre surgery is to try and catch any cells which may have escaped and kill them, and the following operations to remove bladder, prostate etc are to remove any further risk . There would be no evidence now of tumour in the bladder to show on the scan, as this has been removed, but she wanted to check that it has not spread already, and established tumours anywhere else in the body.If it were me, and I am not a doctor, I would proceed immediately with the preop chemo, and if you feel a second opinion is required, make arrangements for this as soon as possible. But do NOT delay. You dad is in a good situation that he has now been diagnosed, hopefully before the cancer has spread, and his team are proposing the correct treatment. Sorry if my post sounds very cold and clinical, but time is now very much of the essence. I am sure others who have had the same diagnosis and ops will come on to give their opinion.