Photoclinic Diagnosis: Esophageal Duplication Cyst

A51-year-old woman presented with progressive dysphagia to solids and liquids and heartburn of two monthsʹ duration. She also reported recent weight loss of six kilograms. On endoscopic examination, there was a submucosal mass lesion with intact mucosa, narrowing the esophageal lumen from the submucosa in the posterior aspect of the esophageal wall in the distal part of the esophagus extending to the lower esophageal sphincter. Endosonography showed a 27×28 mm anechoic mass lesion originating from the wall adjacent to the aorta, with a fluid level containing faint echogenic material inside.