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. Author manuscript; available in PMC: 2023 Aug 17.
Published in final edited form as: Gastrointest Endosc. 2021 Feb 26;94(1):179–186. doi: 10.1016/j.gie.2021.02.027

Figure 2.

Figure 2.

EUS-guided placement of a diffusing fiber for delivery of PDT. A, The 19-gauge FNA needle (green arrow) is visualized within the pancreatic head mass under endosonography. B, The diffusing tip of the optical fiber is seen after introduction through the needle under endosonography as a small hyperechoic point (red arrow).