{
  "abstract": "Background: Endoscopic treatment of postoperative biliary strictures in patients with surgically altered anatomy can be technically challenging. The Drill Dilator advances by rotational torque with minimal forward pushing, potentially facilitating dilation while maintaining endoscope stability. This study evaluated the feasibility and safety of the Drill Dilator as an initial dilation device for postoperative biliary strictures in patients with surgically altered anatomy. Methods: We retrospectively reviewed 46 endoscopic sessions for postoperative biliary strictures performed between December 2016 and April 2026. Among these, 18 initial treatment sessions were included in the comparative analysis. Six sessions in which the Drill Dilator was used as the initial dilation device were evaluated and compared with 12 sessions using conventional dilation devices. Results: The Drill Dilator successfully passed and dilated the stricture in all sessions (100%). Additional dilation with another device was required in 50% of sessions (3/6). Technical success was achieved in all sessions (100%). Mild post-ERCP cholangitis (PEC) occurred in two patients (33.3%), with no severe procedure-related adverse events. In the conventional dilation group, device passage and technical success rates were 100% (12/12) and 91.7% (11/12), respectively. Conclusions: The Drill Dilator was feasible as an initial dilation device for postoperative biliary strictures in patients with surgically altered anatomy. Its use may facilitate subsequent endoscopic dilation, particularly in situations where alignment between the dilation device and the bile duct is challenging.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Gastroenterology, Hematology, and Clinical Immunology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan",
    "Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 12,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Kenta Yoshida",
      "orcid": "0000-0002-3897-5546"
    },
    {
      "affs": [
        0
      ],
      "name": "Satoshi Sato",
      "orcid": "0000-0001-5569-7093"
    },
    {
      "affs": [
        0
      ],
      "name": "Chikara Iino"
    },
    {
      "affs": [
        0
      ],
      "name": "Kota Fujimaki"
    },
    {
      "affs": [
        0
      ],
      "name": "Keita Mikami"
    },
    {
      "affs": [
        0
      ],
      "name": "Keisuke Furusawa"
    },
    {
      "affs": [
        1
      ],
      "name": "Satoru Tsuruta",
      "orcid": "0000-0002-7868-3759"
    },
    {
      "affs": [
        1
      ],
      "name": "Yusuke Wakasa",
      "orcid": "0000-0001-9106-6002"
    },
    {
      "affs": [
        1
      ],
      "name": "Hayato Nagase"
    },
    {
      "affs": [
        1
      ],
      "name": "Norihisa Kimura",
      "orcid": "0000-0002-0585-3024"
    },
    {
      "affs": [
        1
      ],
      "name": "Keinosuke Ishido",
      "orcid": "0000-0002-0342-1199"
    },
    {
      "affs": [
        0
      ],
      "name": "Hirotake Sakuraba",
      "orcid": "0000-0002-6075-1282"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9re3221qrkp3c.bib",
  "cited_by": 0,
  "doi": "10.3390/jcm15218666",
  "fulltext_url": null,
  "id": "9re3221qrkp3c",
  "issns": [
    "2077-0383"
  ],
  "landing_url": "https://www.mdpi.com/2077-0383/15/21/8666",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/9re3221qrkp3c.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T00:21:41Z",
      "native_id": "10.3390/jcm15218666",
      "source": "crossref",
      "url": "https://www.mdpi.com/2077-0383/15/21/8666"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "journal-openalex:F27",
      "subfield": "general"
    }
  ],
  "title": "Feasibility of the Drill Dilator as an Initial Dilation Device for Postoperative Biliary Strictures with Surgically Altered Anatomy",
  "title_text": "Feasibility of the Drill Dilator as an Initial Dilation Device for Postoperative Biliary Strictures with Surgically Altered Anatomy",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T00:21:41Z",
  "url": "https://research.draconitic.com/paper/9re3221qrkp3c",
  "venue": "Journal of Clinical Medicine",
  "versions": []
}