Linear endoscopic ultrasonography vs magnetic resonance imaging in ampullary tumors

World J Gastroenterol. 2010 Nov 28;16(44):5592-7. doi: 10.3748/wjg.v16.i44.5592.


Aim: To assess linear endoscopic ultrasound (L-EUS) and magnetic resonance imaging (MRI) in biliary tract dilation and suspect small ampullary tumor.

Methods: L-EUS and MRI data were compared in 24 patients with small ampullary tumors; all with subsequent histological confirmation. Data were collected prospectively and the accuracy of detection, histological characterization and N staging were assessed retrospectively using the results of surgical or endoscopic treatment as a benchmark.

Results: A suspicion of ampullary tumor was present in 75% of MRI and all L-EUS examinations, with 80% agreement between EUS and histological findings at endoscopy. However, L-EUS and histological TN staging at surgery showed moderate agreement (κ = 0.54).

Conclusion: L-EUS could be a useful adjunct as a diagnostic tool in the evaluation of patients with suspected ampullary tumors.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Adenocarcinoma / diagnosis*
  • Adenocarcinoma / diagnostic imaging
  • Adenocarcinoma / pathology
  • Adenocarcinoma / surgery
  • Adenoma / diagnosis*
  • Adenoma / diagnostic imaging
  • Adenoma / pathology
  • Adenoma / surgery
  • Adult
  • Aged
  • Aged, 80 and over
  • Ampulla of Vater / diagnostic imaging*
  • Ampulla of Vater / pathology*
  • Ampulla of Vater / surgery
  • Chi-Square Distribution
  • Common Bile Duct Neoplasms / diagnosis*
  • Common Bile Duct Neoplasms / diagnostic imaging
  • Common Bile Duct Neoplasms / pathology
  • Common Bile Duct Neoplasms / surgery
  • Endosonography*
  • Female
  • Humans
  • Magnetic Resonance Imaging*
  • Male
  • Middle Aged
  • Neoplasm Staging
  • Predictive Value of Tests
  • Retrospective Studies
  • Sensitivity and Specificity