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Hepatocellular carcinoma case that could not be effectively or safely treated with any treatment except for stereotactic body radiation therapy. The tumor invading the vena cava is enhanced in arterial phase and shows a defect in portal phase on dynamic computed tomography (A and B). An axial view of radiation dose distribution. The isodose lines (white lines) from inner to outer represent 40, 30, 20, and 10 Gy, respectively (C).
