Intraductal US in the assessment of tumor involvement to the orifice of the cystic duct by malignant biliary obstruction

Gastrointestinal Endoscopy
Y NakaiM Omata

Abstract

Tumor involvement to the orifice of the cystic duct (OCD) is a risk factor for cholecystitis after metallic stent (MS) placement. ERCP and intraductal US (IDUS) were used to assess tumor involvement to the OCD. A prospective consecutive study. The University of Tokyo Hospital, Japan. Between January 2003 and May 2007, 34 patients with resectable malignant biliary obstruction underwent an ERCP and an IDUS before preoperative biliary drainage. ERCP and IDUS findings were confirmed via a histopathologic analysis of surgical specimens. An ERCP showed that the cystic duct was opacified in 22 of 34 patients (64.7%). Eight patients were diagnosed with OCD tumor involvement. In the remaining 12 patients, tumor involvement was impossible to evaluate via an ERCP. An IDUS identified tumor involvement to the OCD in all 34 patients. Tumor involvement to the OCD was diagnosed in 12 patients, including 4 patients with previously negative results during an ERCP. Tumor involvement was confirmed by histopathology of surgical specimens. The sensitivity and specificity of detection were 66.7% (8/12) and 63.6% (14/22), respectively, via ERCP, and 100% (12/12) and 100% (22/22), respectively, via IDUS. The small sample size. IDUS, in addition to ERCP...Continue Reading

References

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Citations

Jun 25, 2009·Journal of Hepato-biliary-pancreatic Surgery·Hiroyuki IsayamaMasao Omata
Jan 5, 2011·Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society·Yousuke NakaiKazuhiko Koike
Mar 16, 2011·World Journal of Gastrointestinal Endoscopy·Kazumichi KawakuboKazuhiko Koike
Jul 4, 2012·Gastrointestinal Endoscopy Clinics of North America·Hiroyuki IsayamaKazuhiko Koike
Sep 12, 2009·Best Practice & Research. Clinical Gastroenterology·Naotaka FujitaYoshihide Kanno
Mar 19, 2014·Journal of Gastroenterology and Hepatology·Yousuke NakaiKazuhiko Koike
Mar 19, 2014·Journal of Hepato-biliary-pancreatic Sciences·Tsuyoshi HamadaKazuhiko Koike
Jun 15, 2013·Journal of the American College of Radiology : JACR·Charles E RayGeorge Vatakencherry
Oct 26, 2016·Current Gastroenterology Reports·Hiroyuki IsayamaKazuhiko Koike
Nov 29, 2017·Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society·Yuko SogabeHiroshi Seno

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