自 1997年 11月～ 1999年 7月间应用 OL YMPUS- 30胃镜共检查 42 83例 ,检出十二指肠霜斑样溃疡 2 36例 ,占 5 .5 %。并对其临床表现和发病机制进行讨论。1　资料与方法1.1　一般资料　本组 2 36例中男 171例 ,女 6 5例 ,各组年龄均有发生 ,以 2 0岁～ 5 0岁居多。临床表现空腹 A total of 42 83 cases were examined with OL YMPUS-30 gastroscopy from November 1997 to July 1999, and 236 cases of duodenal frost-like ulcers were detected, accounting for 5.5%. And its clinical manifestations and pathogenesis are discussed. 1 Materials and Methods 1.1 General Information The group of 236 cases in the male 171 cases, female 65 cases, all groups have occurred in age, mostly in 20 years old ~ 50 years old. Clinical manifestations of fasting