Cancers can occur anywhere in the gastrointestinal tract, from the oesophagus to the anus.
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Bowel cancer generally affects the colon or rectum (large bowel). Cancer of the small bowel is rare. Bowel cancer starts in the lining of the bowel (the mucosa). If untreated it spreads deeper into the wall of the bowel. From there, it can spread to lymph nodes in the area. Later, bowel cancer can spread to liver or lungs.
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Carcinoid tumour – is a slow growing cancer that forms in cells that make hormones in the lining of the gastrointestinal tract (the stomach and intestines). It usually occurs in the appendix (a small finger like pouch of the large intestine), small intestine, or rectum. Having gastrointestinal Carcinoid tumour increases the risk of forming other cancers of the digestive system.
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Stomach cancer usually finds its start within the interior layer of the five-layer stomach, it can develop anywhere in the organ and spread to other parts of the body by growing beyond the stomach wall, entering the bloodstream or reaching the lymphatic system. Most cancer stomach tumours are adenocarcinomas.
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Pancreas cancer, also known as pancreatic cancer, occurs when cancer cells form in the tissues of the pancreas. The pancreas has two different functions; it makes enzymes that help digest food in the small intestine, and it makes hormones, such as insulin, that are secreted into the bloodstream. Almost all pancreatic cancers start in the cells that make enzymes, and most pancreatic cancers are adenocarcinomas.
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Primary liver cancer, also known as hepatocellular carcinoma; it originates in the liver (hepatobiliary system). Many cases of liver cancer are metastatic liver cancer. That’s because the liver has two blood supplies, so cancer can spread there from other places such s the colon, rectum, breast and kidney. In such cases, the other organs are considered the primary site of the cancer.
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More information on Bowel Cancer.
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More information on Stomach Cancer.
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More information on Pancreatic Cancer.
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More information on Liver Cancer.
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