<b>Stage IA</b> 
Stage IA tumor is defined as low grade, small, superficial, and deep. 
G1, T1a, N0, M0 
G1, T1b, N0, M0 
G2, T1a, N0, M0 
G2, T1b, N0, M0 

<b>Stage IB</b> 
Stage IB tumor is defined as low grade, large, and superficial. 
G1, T2a, N0, M0 
G2, T2a, N0, M0

<b>Stage IIA</b> 
Stage IIA tumor is defined as low grade, large, and deep. 
G1, T2b, N0, M0 
G2, T2b, N0, M0 

<b>Stage IIB</b> 
Stage IIB tumor is defined as high grade, small, superficial, and deep. 
G3, T1a, N0, M0 
G3, T1b, N0, M0 
G4, T1a, N0, M0 
G4, T1b, N0, M0 

<b>Stage IIC</b> 
Stage IIC tumor is defined as high grade, large, and superficial. 
G3, T2a, N0, M0 
G4, T2a, N0, M0 

<b>Stage III</b> 
Stage III tumor is defined as high grade, large, and deep. 
G3, T2b, N0, M0 
G4, T2b, N0, M0 

<b>Stage IV</b> 
Stage IV is defined as any metastasis to lymph nodes or distant sites. 
Any G, Any T, N1, M0 
Any G, Any T, N0, M1