Gastrointestinal stromal tumor is a disease in which abnormal cells form in the tissues of the gastrointestinal tract. According to the National Cancer Institute:
Genetic factors can increase the risk of having a gastrointestinal stromal tumor.
Signs of gastrointestinal stromal tumors include blood in the stool or vomit.
Tests that examine the GI tract are used to detect (find) and diagnose gastrointestinal stromal tumors.
Very small GISTs are common.
Certain factors affect prognosis (chance of recovery) and treatment options.