Hi Marble, we seem similar in age and diagnosis. I'm 41 and was just diagnosed with non-invasive high grade bladder cancer - no invasion into muscle or the layer below the muscle (lamina propria) so cTa G3. I just met with my uro and am meeting with a uro oncologist tomorrow, but my uro wants to re-TURB to confirm superficial disease (he said initial TURBS are incorrect about 30% of the time) and if all is still non-invasive do BCG. Even though the path report states muscle was present in the sample, he still wants to go back in. This actually relieves me, NOT because I'm looking forward to another TURB mind you, but because I think he's being very thorough.
The watch and wait method your doctor suggests seems to be more geared for superficial LOW grade as opposed to superficial high grade, even if you are on the lower side of the high grade, especially after only one TURBT. Maybe consider a second opinion with someone who specializes in bc just to put your mind at ease?
I'm really interested that your path report gave them enough info to determine the level of high grade it is. I obtained my path report and it just says high grade, it doesn't give any specifics as to how abnormal the cells were and if it's lower-high grade or upper high grade. I'll ask the bc doctor I'm seeing tomorrow. From what I've researched, there used to be 3 grades, but in 2004 the best practice became to just classify the lesions as high grade or low grade and base treatment from there.
My case is also complicated by a diverticulum so I think they want to be more aggressive with treatment.
But my best advice to you is if you are questioning what to do definitely seek a second or even 3rd opinion. It can't hurt and in most cases helps clarify things.
Best of luck to you