Novel endoscopic ultrasound-guided hepaticoduodenostomy using a forward-viewing echoendoscope for altered anatomy
Endoscopic ultrasound-guided hepaticoduodenostomy (EUS-HDS) is used for drainage of the posterior sectoral duct (PSD)     . However, no studies have reported PSD drainage using a forward-viewing echoendoscope for surgically altered anatomy.
A 72-year-old man who had undergone pancreaticoduodenectomy with Child’s reconstruction for distal bile duct cancer developed obstructive jaundice due to malignant hilar biliary obstruction caused by local recurrence (Bismuth type IIIa). Two uncovered self-expandable metallic stents (UCSEMS) were deployed in the left hepatic duct and anterior sectoral duct using a partial stent-in-stent procedure via the choledochojejunostomy, but PSD drainage could not be performed. Thereafter, the patient’s jaundice did not improve, so we opted for EUS-HDS for PSD drainage.
The forward-viewing echoendoscope (TGF-UC260J; Olympus Medical, Tokyo, Japan) was inserted near the choledochojejunostomy ([Fig. 1 a]). The PSD was punctured with a 19-gauge needle (EZ Shot 3 Plus; Olympus Medical) from the jejunum ([Fig. 1 b]; [Video 1]), and a guidewire (M-Through; Asahi Intecc, Tokyo, Japan) inserted into B7 after cholangiographic confirmation ([Fig. 1 c]). Tract dilation was performed using the ES dilator (Zeon Medical, Tokyo, Japan); subsequently, a plastic stent (Through & Pass Type IT; Gadelius Medical, Tokyo, Japan) was deployed to B7 ([Fig. 1 d]).
Video 1 Novel biliary drainage method for surgically altered anatomy in a patient with malignant hilar biliary obstruction, using endoscopic ultrasound-guided hepaticoduodenostomy with a side-by-side with double partial stent-in-stent method.
Thirty-six days later, we reintervened to perform additional B6 drainage because of cholangitis. Cholangiography revealed stenosis of B6 and B7 separately ([Fig. 2 a]). A guidewire (M-Through) was inserted into B6, and a first stent (8 × 60 mm UCSEMS; Niti-S large cell D-type; Taewoong Medical, Seoul, South Korea) was deployed to B6 ([Fig. 2 b]). Subsequently, the guidewire was inserted into B7 through the B6 stent mesh, and a second stent (8 × 60 mm UCSEMS; Niti-S large cell D-type) was deployed to B7 using a partial stent-in-stent method ([Fig. 2 c, d]). Finally, we successfully deployed the metallic stent using a side-by-side with double partial stent-in-stent procedure via the choledochojejunostomy and HDS fistula ([Fig. 3]). No adverse events occurred during the procedure, while the patient’s jaundice and cholangitis improved.
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