American Cancer Society: What Are Gastrointestinal Stromal Tumors?: Provides a description of benign and malignant GIST, differences between tumor types, early detection, staging, diagnosis, treatment, and resources.
Cancer Research UK: GIST: Brief description of the rare type of sarcoma called gastrointestinal stromal tumour.
GIST Support International: Advocates and supports cancer patients dealing with Gastrointestinal Stromal Tumor. Provides information, clinical trials, news, and links.
Royal College of Surgeons: Malignant Gastrointestinal Stromal Tumour: Rare neoplasms located in the small intestine or stomach. They are considered soft tissue sarcoma, but are not always malignant. Article examines the case of a patient with the disease.