Jy. Wang et al., ENDOSCOPIC ULTRASONOGRAPHY FOR PREOPERATIVE LOCOREGIONAL STAGING AND ASSESSMENT OF RESECTABILITY IN GASTRIC-CANCER, Clinical imaging, 22(5), 1998, pp. 355-359
We performed a prospective study from November 1989 to December 1996 t
o assess the accuracy of endoscopic ultrasonography (EUS) in the locor
egional staging and resectability of patients with gastric carcinoma.
One hundred and nineteen patients with gastric cancer who received pre
operative assessment by EUS underwent subsequent surgery. The endosono
graphic tumor-node-metastasis (TNM) classification was used for compar
ison with the histopathologic findings of the resected specimens. The
ability of EUS to accurately predict the T stage (depth of tumor invas
ion) and N stage (involvement of lymph node) was 70% and 65%, respecti
vely. EUS displayed a tendency to overestimate T stage and underestima
te N stage. The differentiation of early gastric cancer from advanced
gastric cancer showed a concordance rate of 89% with an overestimation
rate of 8% and underestimation rate of 3%. The accuracy of EUS in pre
dicting the stage T1 to T3, which correspond to DO resectability (no m
acroscopic or microscopic tumor remains), tvas 91%. In conclusion, the
se results revealed EUS as a valuable tool for evaluating the local st
aging and resectability of gastric cancer. We suggest that EUS should
be introduced in the preoperative assessment of patients with gastric
cancer. (C) Elsevier Science Inc., 1998.