Gastric duplication (bronchogenic) cyst mimicking a gastrointestinal stromal tumour.

Gastric duplication cysts (GDC) lined with pseudostratified columnar ciliated epithelium (PCCE) are uncommon lesions that stem from a foregut developmental malformation. The clinical and radiological diagnosis is usually difficult. Definitive diagnosis can be established by histopathological examination. In this study, we report a rare case of a peri-gastric mass that was operated and reported as a bronchogenic cyst. Microscopically, the gastric cyst was lined by PCCE. Although rare, GDC should be included in the differential diagnosis of gastric wall masses. Surgical intervention is recommended in patients who have clinical symptoms.