Tumors or cancer of the GASTROINTESTINAL TRACT, from the MOUTH to the ANAL CANAL.

Synonyms: Gastrointestinal Neoplasm, Gastrointestinal Tract Cancers, Gastrointestinal Neoplasms, Cancer, Gastrointestinal, Gastrointestinal Cancer, Gastrointestinal Tract Cancer, Gastrointestinal Cancers, Cancer of the Gastrointestinal Tract, Neoplasms, Gastrointestinal, Neoplasm, Gastrointestinal, Cancer of Gastrointestinal Tract, Cancers, Gastrointestinal