Rectum cancer, also known as colorectal cancer, can be a highly aggressive type of cancer that develops in the rectum. It is a serious health condition that requires immediate attention and treatment. Some common synonyms for rectum cancer include colon cancer, large bowel cancer, and bowel cancer. Additionally, it is also referred to as anal cancer when the cancer cells form in the anal canal. Symptoms of rectum cancer may include bloody stools, abdominal pain, loss of appetite, and weight loss. It is important to get regular screenings and follow up with a healthcare professional if any of these symptoms are present.