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。

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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。

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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;

结果414例患儿中浅表性胃炎224例（54.1%），十二指肠球炎136例（32.9%），消化性溃疡51例（12.3%），3例未见异常，总检出率99.3%。

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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;

结果414例患儿中浅表性胃炎224例（54.1%），十二指肠球炎136例（32.9%），消化性溃疡51例（12.3%），3例未见异常，总检出率99.3%。

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