Management of gastric and duodenal neuroendocrine tumors

Figure 1 Gastric neuroendocrine tumor. A: Conventional endoscopic image with white light demonstrates a hemispherical reddish submucosal tumor; B: Magnifying endoscopic image with narrow band imaging demonstrates gastric pit structures present on the surface of the tumor; C: Endoscopic ultrasound (EUS, 20 MHz) demonstrates a hypoechoic intramural structure in the second layer, which corresponds to the submucosal layer of the gastric wall. EUS: Endoscopic ultrasonography.