Abstract
Upper gastrointestinal mass-survey with the small calibered foreward-viewing fiberscope designated as Olympus GIF-P2 was performed among the employees of the companies as the second step of the screening in 1978 and 1979. Total number of photof luorographic screening during the two years was 3, 457 cases, and 648 cases (18.7%) were checked in detail. Panendoscopies were performed in 449 cases (13.0%) . They included 3 cases0.7% of gastric carcinoma, 20 4.5% of gastric ulcer, 23 5.4% of duodenal ulcer, 4 0.9% of gastroduodenal ulcers, 4 (0.9%) of gastric polyp and 138 (31.0%) of other benign lesions including gastric erosion. On the other hand, gastric mass-survey was performed to 3, 548 employees of the same companies in 1976 and 1977 by photofluorography, and 621 cases 17.5% were checked in detail. Endoscopic examinations with lateral-viewing gastrocamera designated as Olympus GT-PA2 were performed in 372 (10.5%), and they included 2 cases of early gastric carcinoma, 19 gastric ulcer, 2 gastroduodenal ulcers, 3 gastric polyp and other benign lesions. Active or healed duodenal ulcers were found endoscopically in 38 (42%) of 90 cases with bulbar deformity on the photofluorogram in 1978 and 1979. In 25 cases with incompetely visualized bulb, only one (4%) showed a healed duodenal ulcer, and for the rest no active duodenal ulcer was found. In some cases with normal bulbar findings on the photof luorogram, active and healed duodenal ulcers could be found endoscopically. And, in res-pect to the cases with bulbar lesions endoscopically, they could be diagnosed more precisely, for instance as for ulcer stage, active or healed. On the other hand, gastric erosions were noted in 68% of the total cases with incompletely visualized bulb, and the rate was higher than that of bulbar deformity. Furthermore, we reconfirmed that the most important point for getting discernible film was the technical mastering of the instrument. The conclusions of this upper gastrointestinal mass-survey with panendoscope were as follows: 1) We can diagnose correctly the duodenal lesions on the spot, and give a suita-ble therapy or a profitable advice to the patients after the examination. 2) The incidence of gastric carcinoma and active gastric ulcer, which should be treated immediately, found with panendoscopy was not significantly different from that found with lateral-viewing gastrocamera. 3) Among the cases with incompletely visualized bulb on the photof luorogram, there were many cases with gastric erosions and only a few cases with active duodenal ulcer.
