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A Ruptured Metastatic Hepatic Gastrointestinal Stromal Tumor Treated by Angiographic Embolization. Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumor of the gastrointestinal tract and occur most frequently in the stomach. The liver is the most common metastatic site of a GIST, and spontaneous rupture of the hepatic metastasis of a malignant gastric GIST is rare. We report the case of a 70-year-old man who presented with sudden right lower quadrant abdominal pain and was diagnosed with a spontaneously ruptured hepatic metastasis of a malignant gastric GIST. The patient was successfully managed with transcatheter arterial embolization of the hepatic artery.