What is Colonoscopy?  The word colonoscopy consists of two Greek words colon and see.  Colon cancer is one of the most common cancers among men and women and can also affect several people in the family.  Colonoscopy is a common method that allows the physician to diagnose and treat benign diseases as well as colorectal cancer at an early stage.  In this article’s tutorial on colonoscopy, we will explain in detail how to prepare for colonoscopy.