Squamous cell carcinoma of anus or anal canal

Description

A squamous cell carcinoma (SCC) arising from the anal canal up to the junction with the anal margin (perianal, hair-bearing skin). Human papillomavirus is detected in the majority of cases. Homosexual HIV-positive men have an increased risk of developing anal squamous cell carcinoma in comparison to the general male population. The prognosis is generally better for anal margin SCC than for anal canal SCC. The former are classified with skin tumours.

Coding note from above levels

For use of this category, reference should be made to the mortality coding rules and guidelines in the Reference Guide.

Exclusions from above levels

• http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
• http://id.who.int/icd/entity/111033337 – Malignant neoplasm metastasis in digestive system
• http://id.who.int/icd/entity/794095161 – Malignant neoplasms of lip, oral cavity or pharynx