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. 2018 Aug 10;6(8):E1020–E1030. doi: 10.1055/a-0614-2202

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Fig. 3 — Endoscopic nasobiliary drainage (ENBD) for perihilar cholangiocarcinoma. a The endoscopic retrograde cholangiography findings showed a Bismuth-Corlette type IIIa perihilar cholangiocarcinoma. Because the optimal surgical plan involved a right trisectionectomy, a conventional 7-Fr ENBD catheter was inserted into the left lateral sectional bile duct. b After 20 days, the amount of bile flow from the ENBD catheter was decreased. Cholangiography via the ENBD catheter showed that the catheter tip was impacted in the thin side branch (arrow head). c A modified 6-Fr ENBD catheter was inserted upstream of the bile duct so that all of the side holes were upstream of the stricture site (arrows).