Although there was no loss of duodenal mucosa under microscope, chronic inflammatory cells were found distribute asystematicly in the lamina propria.

• 光镜下十二指肠黏膜完整未见脱落，固有层中有散在分布的慢性炎细胞，活检取材最深可达黏膜下层，未见其他特异性病理改变。