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A. Blood vessels surrounding the nodule are clearly visible in the power Doppler ultrasonography image acquired before radiofrequency ablation. B. After completion of venous ablation, a compact filling of hot air bubbles is observed (arrowheads). A thin needle is inserted around the nodule for hydrodissection (arrow). An anechoic area was formed by the 5% dextrose injected for hydrodissection (*).
