Abstract
Forward-oblique viewing fiberscope (Olympus GIF-XK10) was used for colonoscopy, and its usefulness was compared with that of conventional forward viewing colonoscope (Olympus CF-1T10I) in terms of manipulation and observation. GIF-XK10 was tried in 52 patients, and CF-1T10I was tried in 202 patients. GIF-XK10 made it possible to keep the wider frontal visual field than CF-1T10I, and, consequently, was found to be useful for detailed observation and safety treatment. On the other hand, the insertion rate of GIF-XK10 into the cecum was 72.2-76.5%, being lower than that of CF-1T10I. However, forward-oblique viewing fiberscope is expected to be useful if the tip-bending range is widened and the working length is made as long as that of the usual specifications of colonoscope.
