In pediatric patients, Ménétrier's disease is an uncommon clinical entity that has been rarely described only as sporadic cases, and the etiology is unclear. These patients usually have a self-limiting clinical course. Cytomegalovirus is an important pathogen in the immunocompromised host. However, cytomegalovirus infection can be detected in non-immunocompromised children. We discuss the possible role of cytomegalovirus infection in both Menetrier's disease and severe gastric ulcers in an immunocompetent child.