Esophageal duplication cyst in an adult masquerading as submucosal tumor.

Gastrointestinal duplications usually manifest in children and may involve the esophagus in 20% cases. Esophageal duplication cysts are a rare cause of dysphagia in adults. We report the case of a 35-year-old male who presented to us with progressive dysphagia of 6 months duration. Contrast enhanced computed tomography showed a soft-tissue lesion in right lateral wall of distal thoracic esophagus. On endoscopic ultrasound, a heterogeneously echotextured lesion with anechoic component present at intramural location in the lower esophagus was noted. The patient underwent surgical excision of the lesion and histopathology confirmed the diagnosis of esophageal duplication cyst.