Lower GI 2016

ANAL CANCER : UICC TNM STAGE

T STAGE

N STAGE

TX - tumor cannot be assessed

NX - nodes cannot be assessed

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T0 - no primary tumor

N0 – no node metastasis

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Tis - AIN 2 & 3 ; high grade SIL

N1 – metastasis in peri-rectal nodes

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T1 - tumor < 2cm maximum diameter

N2 – metastasis in unilateral internal

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iliac and/or inguinal nodes

T2 - tumor > 2cm & < 5cm

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• N3 – metastasis in peri-rectal & inguinal

T3 - tumor > 5cm

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nodes or bilateral internal iliac node involvement or bilateral inguinal node involvement

T4 - tumor of any size invading adjacent organs eg. vagina, urethra,bladder ( excludes rectum, peri- anal skin & sphincter muscle )

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any tumor between rectum and peri-anal skin anal margin tumors classified as skin cancers