digestive system cancer (MONDO_0002516) is a primary or metastatic malignant neoplasm involving any part of the digestive system. Also known as: cancer of digestive system, gastrointestinal system cancer, gastrointestinal tract cancer, malignant digestive system neoplasm, malignant gastrointestinal neoplasm, malignant gastrointestinal system neoplasm, malignant neoplasm of digestive system.