[A case of juvenile polyposis limited to the stomach accompanied by double gastric cancers and Ménétrier's disease].

A 48-year-old woman who had innumerable polyps in her stomach for 4 years visited our hospital to receive further examinations. Her younger brother had undergone gastrectomy because of cancer with gastric polyposis. Gastrography and gastroscopy showed numerous reddish polyps finger-like in form with much mucin in the antrum. On the other hand, polyposis in the corpus and fornix was nodular which formed giant folds. There was no polyps in other organs, therefore, we diagnosed juvenile polyposis limited to the stomach accompanied with Ménétrier disease. Double carcinoma were proved histologically after total gastrectomy. 55.8% of juvenile poplyposis limited to the stomach are accompanied with neoplasms, however, the rate of preoperatively correctly diagnosed neoplasms was 55%, so total gastrectomy was recommended.