Abstract
Duodenal lymph nodule has been given a little notice and only mentioned in some case reports. The present study attempted to estimate the clinical significance of this tissue through the endoscopic examination. Duodenal lymph nodule was searched endoscopically with the magnifying method and the methylene-blue staining method on 2, 493 cases (male: 1897, female : 596). Duodenal lymph nodule was found in smaller percentage (79 cases, 3.17%) than that of the terminal ileum or colon, and was mostly localized in the duodenal bulb (72 cases, 91.4%). It was more frequently found in male (69 cases, 3.64%) than femle (10 case, 1.68%), and tended to decrease with age after puberty, though showing a spike-shaped peak in the 5th. decade. The peptic ulcer or the moderate'-severe atrophic gastritis was of to i coexisted in the upper gastrointestinal tract. In conclusion, we assume that duodenal lymph nodule has some different significance from other intestinal lymph nodule, and further study on functional significance of this tissue is needed.
