1992 Volume 34 Issue 3 Pages 534-539
Fujinon electronic endoscope (EVG-HR, superimage series) with a CCD of about 180, 000 pixels gives us clear and high quality images. We manufactured a magnifying electronic endoscope for trial, the visual field of which was narrowed to 90 degree from 120 degree of original electronic endoscope (EVG-HR). This endoscopic images recorded on 35 mm films are magnified 4 times, then, we can easily observe pits approximately 0.1 mm in diameter of the gastric mucosa and fine capillary network around each gastric pit with the endoscope. We studied fine structures of the surface of gastroduodenal lesions by using the magnifying electronic endoscope. This endoscopy revealed fine capillary networks within the membranous regenerated epithelia at the margin of gastric ulcer, which had been reported as flat and non-structural epithelia by magnifying fiberoptic endoscopes. An early well-differentiated adenocarcinoma of the stomach had irregular shaped sulculi of various sizes on its surface, which were different from those at the adjacent normal mucosal surface. We could also clearly observe each villus and capillary within it in the duodenal bulb. This magnifying electronic endoscope is useful to study fine structure of the surface in various gastroduodenal lesions.
