Clinical, endoscopic and histopathological observation of a rare case of esophageal submucosal gland duct adenoma: A case report

Figure 1 Endoscopic images of esophageal submucosal gland duct adenoma. A: The hemispherical polyp was located at the gastro-esophageal junction with superficial erosion of the surface mucosa; B: Ultrasound endoscopy showed an anechoic lesion located in the submucosa with a clear and smooth boundary; C: Magnifying narrow-band imaging endoscopy revealed a mass with borderless mucosal surface along with a slightly irregular microstructure, twisted and thickened glands, but regular microvessels; D: Gross observation showed a hemispherical bulge on the surface of the specimen removed by endoscopic submucosal dissection, and the surface mucosa was smooth.