1984 Volume 26 Issue 9 Pages 1489-1494_1
Polypoid lesions in the duodenal bulb were observed in 106 cases during the past 10years at the rate of 3.3%. Endoscopically they were classified into 4 types ; diffuse finegranular lesion, small, medium and large polypoid lesion in size. Endoscopic studies werecarried out in 83 cases of small, medium and large polypoid lesions in size. Results obtainedwere as follows ; 1) Average age was 57.4 years of age and 76% of them were distributed over 50 years of age. Male to female ratio was 45 to 38. 2) Concerned with the number of polypoid lesions, 81% of cases had only a single lesion. 3) Most of these lesions (86%) were smaller than 10 mm in diameter. 4) According to the Yamada's classification, 81% of cases showed sessile, type I orII. 5) Ninety two percent of these lesions showed smooth appearance in surface, 74% of which had neither central reddness nor depression. Polypoid lesions with granular or nodular surface were only 8%. 6) Histological diagnosis was obtained by endoscopic biopsy, endoscopic polypectomy and surgical resection in 17 cases. 7cases showed Brunnerioma or hyperplasia of Brunner's glands. It was concluded that it was necessary to make the accurate histological diagnosis in order to study the details of duodenal polypoid lesions.
