Gastritis, duodenal ulcer and duodenitis were in the turn in younger-aged group.
青年组以胃炎占首位，依次为十二指肠溃疡、十二指肠炎。
2
Objective:To investigate extent of lesion, grading criteria of nonspecific duodenitis(NSD) and their association with duodenal ulceration.
目的：探讨非特异性十二指肠炎（NSD）的病变程度、分级方法及其与十二指肠溃疡病间的关系。
3
Results Among 414 cases, there were 224 cases of superficial gastritis(54.1%), 136 cases of duodenitis(32.9%), 51 cases of peptic ulcer(12.3%), and three cases normal;