Ureteral tumour

My daughter has been told she has a tumour on her ureter which bulges slightly into the bladder but is small. She has been told it is unlikely to be benign. She is 29 years old. She has had a history of reflux with Teflon injection on both ureters at 14 years followed a year or so later by more injections of another substance. Both kidneys have damage and lately she has been having more troubles and pain hence the cystoscopy. She is booked in for a CT scan and surgery shortly. My mother died of kidney cancer and my grandmother of bladder cancer.

I would like to know if they could be wrong this is likely to be cancer and could this be to do with the injections she had to correct the reflux.