A descriptive and sophisticated introduction to colonoscopy and colorectal cancer screening has been provided in this comprehensive book. The cases of colorectal cancer (CRC) are increasing worldwide. However, colorectal cancer occurs due to a precursor lesion (adenoma) which is curable and removable. This is used as the principle for CRC screening so as to diagnose it at initial stage, even better if it's at adenoma stage. In relation with this context, colonoscopy has emerged as the technology which helps diagnose cancer and prevent it. This book would provide readers with knowledge regarding implementation of screening program, detection and treatment of lesions, application of colonoscopy and also the use of latest technology in the therapeutic process. The authors have intended to present a valuable and updated account of information to the readers interested in this discipline of medical science.