http://www.liferaftgroup.org/gist.html
Gastrointestinal stromal tumors (GISTs) belong to a group of cancers called soft tissue sarcomas. Sarcomas are a rare type of cancer that can occur in connective tissues, bones, muscles, fat, nerves, blood vessels, and cartilage. Sarcomas are derived from the general class of cells known as "mesenchymal cells". This is some information that is available in this page.