What is a GIST Tumor

A gastrointestinal stromal tumor (GIST) is a common mesenchymal tumor of the gastrointestinal tract, making up 1 to 3 percent of all gastrointestinal malignancies. GIST tumors are caused by mutations in the Kit gene or PDGFRA gene. Ajay Maker, MD, surgical oncologist at Advocate Illinois Masonic Medical Center, talks about a recent young woman he treated for the condition.

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