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TNM Staging of anal canal cancer
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Tx cannot assess primary
•
T0 no evidence of tumour
•
Tis Carcinoma in situ
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T1 <2cm
•
T2 2-5cm
•
T3 >5cm
•
T4 adjacent organ invasion
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M0 no distant metastases
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M1 distant metastases
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Nx cannot be assessed
•
N1 perirectal nodes
•
N2 unilateral internal
iliac/inguinal nodes
•
N3 perirectal and inguinal or
bilateral internal iliac and/or
inguinal nodes