摘要
IM To assess the accuracy and limitations of endoscopic ultrasonography (EUS) in the preoperative staging of gastric carcinoma in comparison with computed tomography (CT).METHODS According to the new (1987) TN staging, 62 patients with gastric carcinomas were examined preoperatively by EUS and compared with the postoperative pathological TN staging. CT of abdomen was performed before surgery in 32 of the patients.RESULTS The overall accuracy of T staging was 839% for EUS and 281% for CT. For the detection of regional lymph node metastases, EUS accuracy was 790%, sensitivity 800% and specificity 875%, versus 500% accuracy for CT. The coincidence of perigastric infiltration was 900% for EUS and 412% for CT. The most frequent causes of misdiagnosis by EUS were microscopic tumor invasion and peritumorous inflammatory or fibrous changes.CONCLUSION EUS is a reliable method for the clinical evaluation of locoregional extension of gastric cancer and more accurate than CT in the preoperative staging of gastric carcinoma.
