Colon cancer is a leading cause of death worldwide. According to the cancer statistics from the CDC and National Cancer Institute in 2015, prostate cancer is the most common form of cancer in men, followed by lung cancer and colon cancer; in women, lung cancer is the most common form of cancer, followed by breast cancer and colon cancer.
A colonoscopy can be used to screen and monitor colon cancer. Today, Narrow-Band Imaging (NBI) International Colorectal Endoscopic Classification (NICE) is the most extensively validated classification used for the detection, evaluation and treatment of colon cancer. NICE is ideal for the early detection of lesions before they are elevated. It provides accurate diagnosis and treatment, requires less time for surgery, facilitates quicker recovery and reduces complications. If an abnormality is detected, it can be removed safely without the need for surgery.
With conventional white-light endoscopy equipment, colon polyps can frequently go undetected. There is also a method that was introduced later involving a contrast-enhancement technique using a dye-based method. This was introduced to enhance any contrast on the surface, but it is a time-consuming procedure. With the latest imaging technique, the light of blue and green wavelengths is used to highlight detail, just as was achieved from using dyes, so as to enhance the detection of colon abnormalities.