Abstract
INTRODUCTION: Juvenile polyposis syndrome it is an uncommon autosomal dominant inherited condition. Hamartomatous polyps can affect the entire gastrointestinal tract but usually predominates in the colon. We introduce a case of juvenile polyposis syndrome presented with massive gastric polyposis that requires a total gastrectomy. CASE PRESENTATION: A 22-year-old man presented symptoms of chronic upper gastrointestinal bleeding. Gastroscopy showed massive gastric polyposis. Initially endoscopic polypectomy was performed, but due to the progressive symptoms, a total gastrectomy was then performed. Histology confirmed massive gastric juvenile polyposis. CONCLUSION: Massive gastric polyposis it is an uncommon manifestation of juvenile polyposis syndrome.