Fig. 1. (A) Convex endoscopic ultrasonography depiction of the celiac plexus and puncture sites for the central and broad techniques. (B) Practical use of the central technique. The puncture needle is advanced to the trunk of the CA branch, and the agent is injected until the high-echoic area expands. CA, celiac artery; SMA, superior mesenteric artery; Ao, aorta.
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