Gastrointestinal tumors of childhood

Tumors of the gastrointestinal tract in children are divided into tumors involving the solid organs that bud from the gastrointestinal tract, principally the liver, and tumors intrinsic to the alimentary tract. This article presents a review of the current state of understanding of solid tissue tumors. The human genome project and better understanding of human genetics have led to remarkable changes in the classification and description of tumors of the alimentary tract. This article attempts to summarize these changes to a current classification of the gastrointestinal polyposis syndromes.