| [ Summary ] |
In 1966, the gastric mucus-removing method was designed following the development of the dye spraying method (Tsuda, et al.), making chromoendoscopic findings very clear. As a result, the targets for chromoendoscopy were extended from the stomach to the entire digestive tract. In 1978, the terms regarding dye methods were standardized and classified. With contrast methods, non-absorbable indigo carmine is employed, facilitating the detailed morphological observation of the stomach and large intestine. With staining methods, dyes such as methylene blue are used. These methods are useful for evaluating intestinal metaplasia of the stomach, colic dysplasia and cancer. The iodine method plays an important role in the diagnosis of early esophageal cancer. The Congo red method facilitates the visualization of the resion of gastric acid secretion ; It is useful for estimating gastric acid secretion and clarifying the pathogenesis of chronic gastritis. Thus, chromoendoscopy has markedly advanced the endoscopic diagnosis of digestive disorders. |