ArticleEndoscopy international open2026
Utility of a novel sheath designed for mapping biopsy for preoperative malignant hilar biliary obstruction.
Article in Endoscopy international open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
Background and study aims: Mapping biopsy (MB) aids in diagnosing superficial mucosal spread of biliary tract cancer. However, conventional MB is technically challenging, which can reduce the diagnostic yield. This study aimed to assess the usefulness of MB using the newly developed Endosheather (ES) (Piolax, Tokyo, Japan). Patients and methods: We retrospectively analyzed data from patients who had biliary tract cancer with hilar biliary obstruction and underwent MB. Outcome measures included the overall technical success rate, quality of specimens, impact of MB results on the treatment strategy, and adverse events (AEs), which were compared between the conventional (Conv) group and the ES group. Results: A total of 91 patients were included. The overall technical success rate was significantly higher in the ES group (92%, 43/47) than in the Conv group (59%, 26/44) ( Conclusions: MB using ES significantly improved technical success and specimen quality, providing valuable information for preoperative assessment of patients with biliary tract cancer.
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