Original Research
Copyright ©The Author(s) 1997. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Dec 15, 1997; 3(4): 242-245
Published online Dec 15, 1997. doi: 10.3748/wjg.v3.i4.242
Comparison of preoperative TN staging of gastric carcinoma by endoscopic ultrasonography with CT examination
Wen Guo, Ya-Li Zhang, Guo-Xing Li, Dian-Yuan Zhou, Wan-Dai Zhang
Wen Guo, Ya-Li Zhang, Dian-Yuan Zhou, Wan-Dai Zhang, PLA Research Institute for Digestive Diseases, Department of General Surgery, Nanfang Hospital, Guangzhou 510515, Guangdong Province, China
Guo-Xing Li, Department of General Surgery, Nanfang Hospital, Guangzhou 510515, Guangdong Province, China
Wen Guo, female, born on 1967-01-30, in Hunan, graduated from the Department of Medicine, 1st Military Medical University in 1988, awarded the MD in 1997, currently lecturer and attending physician specializing in ultrasonography, with 10 papers published.
Author contributions: All authors contributed equally to the work.
Correspondence to: Wen Guo, MD, Department of General Surgery, Nanfang Hospital, Guangzhou 510515, Guangdong Province, China
Received: March 26, 1997
Revised: May 28, 1997
Accepted: September 28, 1997
Published online: December 15, 1997
Abstract

AIM: 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 the results compared with those of postoperative pathological TN staging. CT of abdomen was performed before surgery for 32 of the patients.

RESULTS: The overall accuracy of T staging was 83.9% for EUS and 28.1% for CT. For the detection of regional lymph node metastases, EUS accuracy was 79.0%, sensitivity 80.0% and specificity 87.5%, versus 50.0% accuracy for CT. The coincidence of perigastric infiltration was 90.0% for EUS and 41.2% 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.

Keywords: Stomach neoplasms/radiography; Stomach neoplasms/ultrasonography; Neoplasm staging; Tomography, X-ray computed; Endoscopy