PMC7204887_01
PMC7204887_02
Case 1. Tumor staining. The red arrow indicates the puncture route (left). Tumor staining is seen in contrast after insertion of the external needle (right).
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F1
We inserted a 21-G elastane needle into the blood vessel, which was confirmed by backflow of blood and angiography after plastic stent insertion (Fig. 1).
Case 2. Color Doppler echo can identify the feeding artery of the tumor. We injected ethanol directly into the nutrient vessel (red arrow).
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F2
In case 2, the purpose was to stop the hemorrhage of a ruptured HCC in an elderly patient who did not wish to undergo surgery, so the procedure was performed at the bedside without X-ray equipment (Fig. 2).