{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T13:24:01Z","timestamp":1787318641127,"version":"build-2736575974"},"reference-count":6,"publisher":"Oxford University Press (OUP)","issue":"8","license":[{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"vor","delay-in-days":20,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Septate common bile duct (CBD) is a rare congenital anomaly resulting from incomplete recanalization of the primitive biliary tract. Although often asymptomatic, it predisposes to bile stasis, chronic inflammation, and potential malignant transformation. Distal cholangiocarcinoma arising in association with a septate CBD is exceptionally rare. We report the case of an 84-year-old male presenting with progressive jaundice, right hypochondrial pain, anorexia, and 20\u00a0kg weight loss over 2 months. Examination revealed icterus and a palpable non-tender mass. Laboratory studies showed marked hyperbilirubinemia (total bilirubin 11\u00a0mg\/dl). Ultrasonography demonstrated a 2.5\u2009\u00d7\u20092.0\u00a0cm mass in the CBD\/pancreatic head region causing obstruction. Magnetic resonance cholangiopancreatography (MRCP) identified a malignant distal CBD stricture with proximal dilatation and a longitudinal septum, consistent with Choi Type I septate CBD. The patient was diagnosed with distal cholangiocarcinoma and scheduled for pancreaticoduodenectomy. Recognition of rare biliary anomalies is crucial, with high-resolution MRCP guiding safe resection and reconstruction.<\/jats:p>","DOI":"10.1093\/jscr\/rjag574","type":"journal-article","created":{"date-parts":[[2026,8,15]],"date-time":"2026-08-15T12:48:02Z","timestamp":1786798082000},"source":"Crossref","is-referenced-by-count":0,"title":["Distal cholangiocarcinoma arising in a Choi Type I septate common bile duct: a case report"],"prefix":"10.1093","volume":"2026","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-4801-4847","authenticated-orcid":false,"given":"Santosh","family":"Thorat","sequence":"first","affiliation":[{"name":"HPB and Liver Transplant Surgery, Head of Department, Surgery, PGI YCMH , Pune, Maharashtra ,","place":["India"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mayur","family":"Baviskar","sequence":"additional","affiliation":[{"name":"Department of Surgery, PCMC PGI Yashwantrao Chavan Memorial Hospital , Sant Tukaram Nagar Rd, Sant Tukaram Nagar, Pimpri Colony, Pune, Pimpri-Chinchwad, Maharashtra 411018 ,","place":["India"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dattatray","family":"Toradmal","sequence":"additional","affiliation":[{"name":"Department of Surgery, PCMC PGI Yashwantrao Chavan Memorial Hospital , Sant Tukaram Nagar Rd, Sant Tukaram Nagar, Pimpri Colony, Pune, Pimpri-Chinchwad, Maharashtra 411018 ,","place":["India"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aniket","family":"Kuldipak","sequence":"additional","affiliation":[{"name":"Department of Surgery, PCMC PGI Yashwantrao Chavan Memorial Hospital , Sant Tukaram Nagar Rd, Sant Tukaram Nagar, Pimpri Colony, Pune, Pimpri-Chinchwad, Maharashtra 411018 ,","place":["India"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikita","family":"Gaikwad","sequence":"additional","affiliation":[{"name":"Department of Surgery, PCMC PGI Yashwantrao Chavan Memorial Hospital , Sant Tukaram Nagar Rd, Sant Tukaram Nagar, Pimpri Colony, Pune, Pimpri-Chinchwad, Maharashtra 411018 ,","place":["India"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikhil","family":"Gavhane","sequence":"additional","affiliation":[{"name":"Department of Surgery, PCMC PGI Yashwantrao Chavan Memorial Hospital , Sant Tukaram Nagar Rd, Sant Tukaram Nagar, Pimpri Colony, Pune, Pimpri-Chinchwad, Maharashtra 411018 ,","place":["India"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,8,21]]},"reference":[{"key":"2026082108275046900_ref1","doi-asserted-by":"publisher","first-page":"271","DOI":"10.1007\/BF01656159","article-title":"Radiological anatomy of the biliary tract: variations and congenital abnormalities","volume":"7","author":"Puente","year":"1983","journal-title":"World J Surg"},{"key":"2026082108275046900_ref2","doi-asserted-by":"publisher","first-page":"676","DOI":"10.1067\/msy.2002.124025","article-title":"Double common bile duct: a case report and a review of the Japanese literature","volume":"131","author":"Yamashita","year":"2002","journal-title":"Surgery"},{"key":"2026082108275046900_ref3","doi-asserted-by":"publisher","first-page":"389","DOI":"10.2214\/ajr.177.2.1770389","article-title":"Anatomic variants of the biliary tree: MR cholangiographic findings and clinical applications","volume":"177","author":"Mortele","year":"2001","journal-title":"AJR Am J Roentgenol"},{"key":"2026082108275046900_ref4","doi-asserted-by":"publisher","first-page":"778","DOI":"10.1007\/s00595-013-0561-1","article-title":"Double common bile duct with choledochal cyst and cholelithiasis: report of a case","volume":"44","author":"Chen","year":"2014","journal-title":"Surg Today"},{"key":"2026082108275046900_ref5","doi-asserted-by":"publisher","first-page":"105","DOI":"10.1007\/s00276-013-1157-6","article-title":"Bile duct confluence: anatomic variations and its classification","volume":"36","author":"Chaib","year":"2014","journal-title":"Surg Radiol Anat"},{"key":"2026082108275046900_ref6","volume-title":"Last\u2019s Anatomy: Regional and Applied MRCS Study Guides","author":"Sinnatamby","year":"1999"}],"container-title":["Journal of Surgical Case 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