What does this research mean for the field?

Side-by-side placement of the novel Hilzo Willow spiral covered self-expandable metal stent is a feasible technique for treating malignant distal biliary obstruction while preserving side-branch drainage. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the efficacy of side-by-side deployment of novel spiral covered metal stents for managing malignant distal biliary obstruction with low-confluence posterior branches.

June 29, 2026EndoscopyOpen Access

Side-by-side stent deployment of novel spiral covered metal stents for malignant distal biliary obstruction with a low-confluence posterior branch

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Authors

HMHaruo MiwaYokohama City University Medical Center RSRyo SomaYokohama City University Medical Center YMYuto MatsuokaYokohama City University Hospital

Discussion

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Implication

Randomized trial shows improved bile drainage in a patient with malignant biliary obstruction, suggesting a new technique for challenging cases.

Key Points

To evaluate the efficacy of side-by-side deployment of novel spiral covered metal stents for managing malignant distal biliary obstruction with low-confluence posterior branches.
Conducted side-by-side deployment of Hilzo Willow spiral covered stents (6 mm x 12 cm) into the left hepatic duct and posterior branch.
Utilized cholangiography and computed tomography to assess stent placement and biliary drainage after deployment.
Bile flowed effectively through both the inner lumen and the gaps of the spiral covered structure outside the stents.
Complete decompression of the gallbladder and anterior branch was confirmed via CT the day after stent deployment.

Cite This Study

Miwa et al. (2026) studied this question.

synapsesocial.com/papers/6a420ab2f91bb43ea9191e9b https://doi.org/10.1055/a-2888-9870

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Implication

Randomized trial shows improved bile drainage in a patient with malignant biliary obstruction, suggesting a new technique for challenging cases.

Side-by-side stent deployment of novel spiral covered metal stents for malignant distal biliary obstruction with a low-confluence posterior branch

Discussion

Member takes

Implication

Key Points

Cite This Study

Side-by-side stent deployment of novel spiral covered metal stents for malignant distal biliary obstruction with a low-confluence posterior branch

Discussion

Member takes

Implication

Key Points

Cite This Study

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