The cancers of the gastrointestinal tract and accessory organs which show the symptoms of internal bleeding, acute pains, swelling, inability to digest, difficulty in swallowing or chronic constipation or acute diarrhea.
Gastrointestinal cancers are categorized into 2 types- upper gastrointestinal cancers and lower gastrointestinal tract cancers. Diagnosis requires endoscopy followed by biopsy, if there is a suspicion or a cyst. Upper digestive tract cancers include cancers of Esophagus, Stomach, Pancreas, liver, Gall bladder, and MALT.
Lower digestive tract cancers include colorectal cancer, anal cancer, large and small intestine cancers, retroperitoneum and carcinoid tumor. Cancers of pancreas, gall bladder and liver are lethal with prolonged hepatitis and liver cancer being the second most common cancers with pancreatic cancer being the 5th common and gastric cancer being the 4th common cancer that claims lives.