1. Introduction
Colon cancer is a growth of cells that begins in a part of the large intestine. It develops from polyps in the colon’s inner lining. There are screening developed to find polyps that may turn to cancer over time. The screening helps find colorectal cancer at an early stage. Colorectal polyps don’t always cause symptoms, such as changed bowel habits, blood in the stool, diarrhea or constipation, abdominal pain or weight loss. According to World Health Organization the colorectal cancer is the third most common cancer worldwide, accounting for approximately 10% of all cancer cases and is the second leading cause of cancer-related deaths worldwide [1].
