EORTC Risk Tables for Stage Ta T1 Bladder Cancer (SBC – superficial bladder cancer) Bladder Cancer Risk Calculator Number of tumours Single 2 - 7 8 and more Tumour diameter Less than 3cm 3cm and more Prior recurrence rate Primary tumour 1 or less recurrence/year 2 or more recurrence/year Category Ta T1 CIS No Yes Grade G1 G2 G3