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

Dr. Weijing Sun discussed how GIST is typically diagnosed, as well as what tests are commonly used to confirm the diagnosis.

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.

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.