Conversion of endoscopic nasobiliary drainage into internal drainage versus endoscopic biliary stenting for benign biliary obstruction: a retrospective propensity score-matched comparative study.

Although the cumulative patency did not reach statistical significance ( p = 0.419), these longitudinal data demonstrate that the low-dose conversion method achieves a durable patency profile comparable to the conventional high-dose approach, ensuring that radiation reduction does not compromise long-term clinical outcomes.

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During the follow-up, the experimental group exhibited a favorable trend toward sustained patency (Median Patency: Not Reached vs 13.0 months; p = 0.419).

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