Successful recanalization of complete bile duct obstruction using piercing technique under cholangioscopic guidance

Bile duct strictures and obstructions after hepatectomy are significant complications. Endoscopic treatment is considered optimal because of its lesser invasiveness. However, complete obstruction is difficult to treat. We report the successful recanalization of complete bile duct obstruction using a piercing technique under cholangioscopic guidance.

A 79-year-old woman was referred to our department for the treatment of bile leakage with bile duct obstruction following right anterior sectionectomy. Endoscopic retrograde cholangiopancreatography (ERCP) revealed obstruction of the right hepatic duct. Selective negotiation using a hydrophilic guidewire was not possible. Simultaneous cholangiogram via the percutaneous drainage tube and cystic duct tube placed into the common bile duct revealed complete short-segment obstruction of the right hepatic duct ([Fig. 1]). Contrast-enhanced computed tomography (CT) images showed no apparent intervening vessels between the right hepatic duct and the right posterior branch.

Fig. 1 Simultaneous cholangiogram via the percutaneous drainage tube and the cystic duct tube placed into the common bile duct revealed complete short-segment obstruction of the right hepatic duct.

Selective negotiation under direct vision using a cholangioscope (SpyGlass DS; Boston Scientific, Natick, Massachusetts, USA) was attempted, but it was unsuccessful. Therefore, under fluoroscopic guidance, the cholangioscope tip was aligned with the direction of the right posterior branch, and piercing was performed with the stiff edge of the guidewire ([Fig. 2]). Subsequently, negotiation of the right posterior branch was attempted, but the guidewire could not be advanced into the bile duct. However, cholangioscopic imaging revealed the contrast medium flowing into the bile duct through a small hole created by the piercing ([Video 1]). Negotiation targeting this site under cholangioscopic guidance enabled selective guidewire insertion to the right posterior branch ([Fig. 3]). Then, the fistula was dilated using a 6-mm dilation balloon catheter (REN biliary dilation catheter; Kaneka, Osaka, Japan), and a 7-Fr plastic stent (Through & Pass IS; Gadelius Medical, Tokyo, Japan) was placed across the fistula ([Fig. 4]).

Fig. 2 The cholangioscope tip was aligned with the direction of the right posterior branch, and piercing was performed with the stiff edge of the guidewire (yellow arrowheads).

Video 1 Cholangioscopic imaging revealed the contrast medium flowing into the bile duct (yellow arrowheads) through a small hole created by the piercing (orange arrow). Finally, successful recanalization was achieved.

Fig. 3 The cholangioscopic image revealed contrast medium flowing into the bile duct through a small hole created by the piercing. Negotiation targeting this site under cholangioscopic guidance enabled selective guidewire insertion to the right posterior branch. a Direct cholangioscopic image. b Fluoroscopic image.

Fig. 4 A 7-Fr plastic stent was placed across the fistula.

Cholangioscopy-assisted guidewire placement and a piercing technique have been reported for postoperative biliary strictures or obstructions [1] [2] [3] [4] [5]. The combination of both as shown here is a useful alternative for difficult cases.

Endoscopy_UCTN_Code_CPL_1AK_2AD

Publikationsverlauf

Artikel online veröffentlicht:
19. Juli 2021

• References

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