T1 = 5cm
T1a superficial to muscular fascia
T1b deep to muscular fascia
T2 > 5cm
T2a superficial to muscular fascia
T2b deep to muscular fascia
N1 Regional nodal involvement
G1 Well-differentiated
G2 Moderately differentiated
G3 Poorly differentiated
G4 Undifferentiated
Stage IA G1 or 2 T1a or b N0 M0
Stage IB G2 T2a or b N0 M0
Stage IIA G 3 or 4 T1a or b N0 M0
Stage IIB G 3 or 4 T2a N0 M0
Stage III G 3 or 4 T2b N0 M0
Stage IV Any G Any T N1 M0
Any G Any T Any N M1
