Abstract
Having had an opportunity of using Olympus Kogaku's GIF-D, we used it in the endoscopic examination of 410 clinical cases during a 10-month period and obtained the following valuable information. The endoscope, with its advantage of being of direct vision type, permits inspection of the esophagus, stomach and duodenal bulb simultaneously. It can be introduced into the esophagus with safety even in the presence of a high degree of curvature of the vertebral column. With this instrument, it is possible to obtain an adequate frontal vision of the gastric angle by strong angle manipulation although there is some difficulty in examining the pyloric antrum at its lesser curvature side and the posterior walls of the angle and body. Because of an excellent closing effect it proves to be of great use in the examination of the pylorus and its neighboring areas and is also turned round with ease. It can be used particularly efficiently in the inspection of the greater curvature at bulbar level and bulbar phthisis, both of which are usually difficult to observe with endoscopes of lateral vision or right angle type. Permitting a very close observation, it proves to be efficient for the observation of such minute structures as villi and minor projections and recesses. The interior of the upper portion of jejunum in cases with partially resected stomach (Billroth II) may also be viewed with this instrument. As an interesting case an ascaris discovered in and eliminated from the intestine during endoscopy was displayed. With this endoscope, pancreato-cholan-giography was performed successfully in 13 (86.7%) of 15 cases with partially resected stomach (Billroth II). Lastly, it exerted its characteristic power as a panview fiberscope in emergency endoscopy.
