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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 retrospectivelyusing 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 sus-pected ampullary tumors.
AIM: To assess linear endoscopic ultrasound (L-EUS) and magnetic resonance imaging (MRI) in biliary tract dilation and suspect small ampullary tumors. 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 administered 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. How to L-EUS and histological TN staging at surgery reported moderate agreement (κ = 0.54) .CONCLUSION: L-EUS could be a useful adjunct as a diagnostic tool in the evaluation of patients with sus-pected ampullary tumors.