Introduction . Duplication cysts (DC) of the gastrointestinal tract are a rare congenital anomaly. According to its structure, DC is homogeneous neoplasm, often spherical in shape, form doubling (duplication) wall hollow organ. The main methods for diagnosis upper endoscopy (EGD), CT, MRI, and endosonography. indications surgical treatment patients with are: rapid growth neoplasms, localization...