Biliary drainage of hilar biliary obstruction (HBO) after surgical biliary reconstruction, including pancreatoduodenectomy, is challenging because recurrent tumors hamper access to the hepaticojejunostomy anastomosis (HJA) [1]. Although endoscopic ultrasound (EUS)-guided hepaticogastrostomy is an alternative, biliary drainage of both hepatic lobes is still difficult [2]
[3]
[4]. We report a case in which multiple metal stents were placed across an unrecognizable HJA using a partial stent-in-stent technique with EUS-guided antegrade stenting.
A 66-year-old woman with a 2-year history of pancreatoduodenectomy for distal biliary cancer presented with cholangitis. Contrast-enhanced computed tomography revealed a dilated intrahepatic bile duct due to a hepatic mass occupying the anterior segment and involving the hepatic hilum and jejunal limb near the HJA ([Fig. 1]). Biliary drainage via the HJA by endoscopic retrograde cholangiopancreatography using a colonoscope failed; tumor invasion prevented HJA detection ([Video 1]). Therefore, we planned to place a metal stent from the right posterior bile duct to the HJA by EUS-guided antegrade stenting from the jejunum, followed by additional stenting through the metal stent from the HJA to the left hepatic duct.
Fig. 1 Computed tomography showed a hepatic mass in the anterior segment causing dilation of the intrahepatic bile duct (arrowhead).
Video 1 Combination of endoscopic retrograde cholangiopancreatography and endoscopic ultrasound-guided antegrade stenting for hilar biliary obstruction after pancreatoduodenectomy.
A forward-viewing echoendoscope was advanced into the afferent limb, the dilated posterior bile duct was punctured using a 19-gauge needle, and the hilar biliary obstruction was confirmed by cholangiogram. A 0.025-inch hydrophilic guidewire was inserted beyond the obstruction site, toward the jejunal limb ([Fig. 2]). After exchanging this for a 0.035-inch extra-stiff guidewire (Revowave ultra hard; Piolax Medical Devices, Kanagawa, Japan), an uncovered metal stent (diameter 10 mm, length 10 cm; Zilver, Cook Medical, Bloomington, Indiana, USA) was deployed across the HJA in an antegrade manner ([Fig. 3]). Thereafter, the echoendoscope was retrieved, leaving the guidewire in place. Subsequently, the colonoscope was advanced into the jejunum along the guidewire; this was a landmark for reaching another guidewire in the left hepatic duct. Another metal stent was deployed using the stent-in-stent technique ([Fig. 4]). No adverse events occurred. The patient was discharged 5 days postoperatively.
Fig. 2 Cholangiography revealed that the posterior bile duct was obstructed near the hepaticojejunostomy anastomosis. A guidewire was advanced through the obstruction and coiled within the jejunum.
Fig. 3 A metal stent was placed from the posterior bile duct to the jejunum in an antegrade manner.
Fig. 4 The second metal stent was deployed through the first stent from the hepaticojejunostomy to the left hepatic duct using a partial stent-in-stent technique.
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