Evaluation of TNM classification of gastric carcinoma before operation by endoscopic ultrasonography
- VernacularTitle:超声内镜术前判断胃癌TNM分期的价值
- Author:
Xiaoping ZOU
;
Guoming XU
;
Zhendong JIN
- Publication Type:Journal Article
- Keywords:
Gastric carcinoma Endoscopic ultrasonography TNM classification
- From:
Chinese Journal of Digestion
1996;0(S1):-
- CountryChina
- Language:Chinese
-
Abstract:
70 patients with gastric carcinoma were studied by EUS prior to surgery. The results were correlated with the histology of resected specimens according to the new TNM classification. EUS was accurate in assessing the depth of tumor infiltration, the overall accuracy of EUS was 74.3%. The cancerous ulcer and obstruction are the main causes of over- and understaging, respectively. EUS was relatively accurate in the assessment of lymph node metastasis, the overall accuracy was 57.1%. However, negative-predictive rate is lower, about 42.9%. It is difficult to distinguish between inflammatory and metastatic lymph nodes. EUS was not reliable in diagnosing distant metastasis, due to its limited depth of penetration. In our experience, in staging the gastric carcinoma, greater accuracy would be achieved if we use EUS for T and N factors, and CT for M factor.
