Ta, low grade papillary tumors progress in grade or become invasive less than 5% of the time, and are high in grade in only 1% to 3% of cases. In contrast, stage T1 tumors may be high grade in 30% to 50% of cases and are rarely low grade.1 Carcinoma in situ is considered a high risk form of bladder cancer with a widely variable outcome. Although all three kinds of tumors are considered non-invasive (formerly referred to as "superficial"), their outcomes are clearly different.
I copied the above from blcwebcafe.org.
My last TURB had nearly no bleeding at all. The tumor was small. My 1st Turbt I had 3 tumors, and I was bleeding for 2 days.
Jack