Nona Zabolinejad - ۱Department of pathology, Mashhad University of Medical Sciences, Mashhad, Iran
Mehran Hiradfar - Department of pediatric surgery, Mashhad University of Medical Sciences, Mashhad, Iran
Ehsan Khadivi - Ear, Nose, Throat, Head and Neck surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
Mohammad Gharavi - Department of anesthesiology, Mashhad University of Medical Sciences, Mashhad, Iran

Introduction: Heterotopic gastrointestinal cyst of the oral cavity is an extremely rare lesion with fewer than ۴۰ cases reported in the English literature. It usually involves the soft tissue covering the floor of the mouth and the tongue. Lining of this lesion resembles gastric or intestinal mucosa. Case Report: In this report we describe the lesion in two boys and discuss their pathogenesis.

Cyst, Heterotopic gastrointestinal epithelium, Heterotopic oral gastrointestinal cyst