Esophageal Duplication Cyst: A Rare Cause of Esophagogastric Junction Obstruction.

Esophageal duplication cysts are rare benign esophageal masses. We present the case of a 37-year-old man with slowly progressing dysphagia and postprandial pain who was found to have a cystic mass measuring 4.6 cm × 5.4 cm × 4.6 cm above the esophagogastric junction. The manometry results were consistent with esophagogastric outflow obstruction. The patient underwent robot-assisted laparoscopic parasophageal mass resection with intraoperative endoluminal functional lumen imaging probe analysis. This report describes esophageal duplication cysts as a cause of esophagogastric junction obstruction and discusses a management approach for this condition.