Brazil nuts contain high levels of minerals such as selenium, magnesium, copper, manganese, potassium, calcium, iron, phosphorus, and zinc. Magnesium is a key nutrient in a whole host of biological processes. Selenium is an important co-factor for the antioxidant enzyme glutathione-peroxidase.
Print All Open All Close All. A gastrointestinal stromal tumor (GIST) is a type of tumor that occurs in the gastrointestinal tract, most commonly in the stomach or small intestine. The tumors are thought to grow from specialized cells found in the gastrointestinal tract called interstitial cells of Cajal (ICCs) or precursors to these cells. GISTs are usually found in adults between ages 40 and 70; rarely, children and young adults develop these tumors.
Hyperlinked terms are defined in the glossary section of this website. Click the term to see a pop-up definition. Gastrointestinal stromal tumor (GIST) is a rare cancer affecting the digestive tract or nearby structures within the abdomen.GI stromal tumor, or GIST cancer, is a sarcoma.ecause primary GISTs in these locations do not arise directly from the GI tract, they are sometimes called âextragastrointestinalâ stromal tumors (Reith et al, 2000). When a GIST grows in a location where it is not encased in the peritoneal membranes, it is said to be retroperitoneal.