What is anal cancer?

What is anal cancer?

Anal cancer happens when abnormal cells grow and multiply in your anal area or anal canal. The anal canal connects your anus (the opening) to your rectum (the lower portion of your gastrointestinal tract). This passage is about 1 to 2 inches long. It’s the part of the body that excretes solid waste (poop). Anal cancer is also called carcinoma of the anal canal.