Chromoendoscopy is a diagnostic procedure that is used for examining the gastrointestinal tract. It involves the application of dyes to the lining of the digestive system which highlights any abnormalities, allowing for more accurate diagnosis. Synonyms for chromoendoscopy include contrast endoscopy, dye spray endoscopy, and virtual chromoendoscopy. These terms describe similar procedures that make use of contrast agents to enhance the visibility of the gastrointestinal lining, improving the accuracy of diagnosis. Chromoendoscopy is an important tool for identifying gastrointestinal conditions such as cancer, inflammatory bowel disease, and ulcers. By providing a detailed view of the gastrointestinal tract, it helps doctors to diagnose and treat patients more effectively.