抄録
From 1972, the endoscopic observation of the small intestine have been done using the S. I. F. (Olympus) by ordinary method. Nowadays, the duodeno-jejunal junction can be observed easily in almost cases. But with this method, we can not observe the lower part of the jejunum. So, we use the rope way method with the per anal endoscopic tecqnic which have been reported by Dr. H. Hiratsuka. By Combination with these methods, we can observe and take out biopsy specimen from the mucosa of the not only ileum but also through out small intestine. Apparently, the mucosa of the upper small intestine differ from the lower one-in the crescentric folds, the color of the mucosa and the pattern of blood vessels. We suspect that these differences are correspond to the varieties of its function. By the way, the mucosa of the lower part of the small intestine, especially the end of the ileum resembles the large bowel. The dye scattering method can help us to observe the villi on the surface of the mucosa. In normal case, the villous pattern of small intestine is quite regular in shape and its arrangement. We enphasize that it is very important to observe the surface villous pattern of the intestinal mucosa for the purpose of studying on its disease.
