So I am now home.
The consultant before the OP said that he had reviewed the scans again (I presume with others in an MDT) and he didn't expect to find anything at all. Anyway my ureter was normal, my kidney was normal and there was no tumour or growth found at all.
I have been given the all clear as far as he is concerned and have been discharged from his care.
As far as the red patches are concerned, he didn't know what they were, they are definitely not cancerous or atypical so he thinks they are caused by a virus or maybe something in my (undisclosed) history. I assume he meant my military records.