I do see your reasoning. If you didn't have a CT pre surgery did they visulaize the CIS via cystoscopy?
Mr C had a CT which showed the mass, than a Cystoscopy and then the TURBT.
Last week status post 6 days TURBT he was having extreme pain and the CT showed a mass in the bladder. The mass was a tennis ball sized blood clot.
Great question to ask your doc.