Lower GI 2016

SCC of the Anal Margin

• Risk of lymph node metastasis is related to tumour size:

Tumour size

% Node Metastasis % Node Metastasis Papillon & Chassard ( 1992 ) Cummings et al ( 1986 )

< 2cm

0 %

0 %

2 – 5 cm

24 %

> 5cm

67 %

25 %