From: Clinico-pathological features of bladder carcinoma in women in Pakistan and smokeless tobacco as a possible risk factor
Duration of smokeless tobacco use
1–10 years
11–20 years
21–30 years
31–40 years
Total
T1 (pTa/pT1)
1
2
4
T2
3
6
T3
9
T4
7
12
21