| umls-concept:C0349534 | skos:definition | NCI: A carcinoma arising in the anal margin or perianal skin (below the anal verge and involving the perianal hair-bearing skin). It includes basal cell and squamous cell carcinoma. Anal margin carcinoma is staged as a skin carcinoma, separately from anal canal carcinoma. -- 2003 | lld:umls |
