Thank you jeffp for your interest. Yes, it was the report of a Biopsy that was taken and that gave the "clear of cancer" diagnosis. However, I had already been told (immediately afterwards) by the doctor who performed the initial endoscopy procedure that, in his opinion, the cyst that he had removed was cancerous. As I said, another (intern) allowed me, at a later visit, to see the lab report.
I had a brief, fairly mild quarrel over this confusing information with the consultant who performed the subsequent TURB procedures. He reacted as though I had called his competence into question. I felt that I had to apologise in order to continue to attend his clinic which is by far the most convenient for me.
Now I am overdue again, to have the "distending procedure" ( I have already had it once , some months ago) carried out. I wonder if there is some way that the scar tissue can be prevented/removed. If there is, I shall be demanding that it be proceeded with.
Thanks also Q and Catspaw49 , you're right of course, I should have sought a second opinion but, the consultant under whose care I am, is very , very highly regarded.