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Malignant gastric GIST in a 54-year-old man presenting with gastrointestinal bleeding and epigastric pain. Axial enhanced MRI demonstrates a large, well-defined mass with a predominant exogastric component (white arrow) arising from the greater curvature. There is an avidly enhancing peripheral component with central non-enhancing necrosis. Inset: image reveals the mass to be intermediate to high signal intensity (arrow) on T2-weighted MRI.
