In this paper a 21 year old patient was presented with Ménétrier's disease, associated with ulcerative colitis. The first symptoms of ulcerative colitis occurred at the age of eleven, since when the patient has been conservatively treated several times because of the exacerbations of the disease. During control examinations presence of polyploid changes in stomach was discovered by upper endoscopy. Gastrectomy was suggested because the patient had excessive anemic syndrome which required weekly substitutional therapy with deplasmatic eritrocytes, as well as hypoproteinemia, while multiple polyploid changes suspect for malignancy were gastroscopically identified. Patient accepted surgical treatment, and was transferred to the Clinic of Surgery. Total gastrectomy was performed, and patohistological finding confirmed Ménétrier's disease. After two weeks, the patient was released from the hospital in good general condition, with regular clinical and laboratory findings.