Sep 28, · Core tip: Despite advances in the diagnosis and management, we continue to see a steady rise in the incidence of anal squamous cell cancer. 80% of anal cancers are squamous cell carcinomas (SCCs). Other tumour types include melanoma, lymphoma and adenocarcinoma. Tumour behaviour depends on its anatomical site of the primary cancer. The anal canal extends from the anorectal junction to the anal margin. Introduction. Squamous cell carcinoma of the anal margin or perianal skin is relatively uncommon, and most physicians, even those practicing at large referral centers.
Distant metastases are common. Local complications include cystitis, small bowel obstruction and arterial stenosis. It can be temporarily disabled by clicking the "shield" icon in the address bar. Misdiagnosis is frequent, and patients may have been erroneously treated for hemorrhoidal disease or other benign conditions. If the melanoma has spread too far to be removed completely, other treatments may be given.