Anal anatomy and normal histology.

The article discusses the anatomy and histology of the anal canal and its clinical relevance to anal cancers. The author highlights the histological and anatomical changes to the traditional terminology of the anal canal and describes the gross anatomy of the anal canal along with its associated blood supply, venous and lymphatic drainage, and nerve supply. The author believes that the terminology referred in the article could assist clinicians and health care providers to identify lesions more precisely through naked-eye observation.