Efficacy and Safety of Exploring Deeper Sections of the Infrapapillary Area of the Duodenum by Using Sedative Esophagogastroduodenoscopy

<div>(a) Shallow ulcer over the infrapapillary area (arrow). (b) NK cell enteropathy composed of mononuclear cells infiltrating the duodenal mucosa. Further immunohistochemical staining confirmed the NK cell phenotype (CD3+/CD56+/TIA-1+) (H&amp;E, 100x).</div>

Gastroenterology Research and Practice

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Figure 3

Figure 3: Efficacy and Safety of Exploring Deeper Sections of the Infrapapillary Area of the Duodenum by Using Sedative Esophagogastroduodenoscopy 