Unlike most GI cancers, GIST starts in supportive stromal tissue, not surface cells, and is classified as a sarcoma, says Dr.

Cite this: A Case of Obscure Gastrointestinal Bleeding Secondary to a Small Bowel Gastrointestinal Stromal Tumor Detected by Magnetic Resonance Enterography - Medscape - Nov 18, 2008.

The small intestine is about three times the length of your body — the longest part of the digestive tract. When you eat food, it’s held in your small intestine for up to four hours.

Your small intestine is around five metres long, making it the longest section of your digestive tract. Although it is longer than your large intestine it has a smaller diameter.

But getting into the small intestine, and retrieving anything from it, has always been difficult. “It’s been ignored,” says Gary Frost, who studies digestion at Imperial College London.

2 Clinical need and practice 2.1 Gastro-intestinal stromal tumours (GISTs) are rare connective tissue tumours that show a differentiation profile similar to the interstitial cells of Cajal. They ...