What is anal cancer? Anal cancer is a type of cancer that occurs in the cells of the anus, a small opening at the end of the digestive tract through which stool exits the body. It begins when cells in this region grow uncontrollably, forming a malignant tumor. A malignant tumor means that it has … Continue reading Anal Cancer (Anus, Rectal Cancer) | Symptoms, Stages, Types, Diagnosis, Treatment, and Survival Rates