N

Stage

Histological Grade

Size

Risk of Recidive

Weight

3

Ta

low

1.5 - 3 cm

<3 years

0.54

11

Ta

high

>3 cm

<3 years

0.78

14

T1

low

<1.5 cm

>3 years

0.4

21

T1

high

1.5 - 3 cm

<3 years

0.8

24

T1

high

>3 cm

>3 years

0.1