Esophageal submucosal gland duct adenoma with multiple surface ductal opening.
Esophageal submucosal gland duct adenomas (ESGDAs) are extremely rare benign tumors originating from submucosal gland (SMG) duct clusters, with only 26 reported cases that account for less than 1% of all esophageal tumors. Since esophageal SMGs are located deep in the submucosa, ESGDA with multiple surface ductal openi...