Endoscopic ultrasonography in preoperative staging of gastric cancer: determination of tumor invasion depth, nodal involvement and surgical resectability

Table 1 Accuracy of EUS preoperative T staging in 35 patients with gastric carcinoma

EUS stage	n	Pathologicstage				Accuracy of EUS (%)
		T1	T2	T3	T4
T1	1	1	0	0	0	100
T2	7	1	5	1	0	71.4
T3	16	0	2	14	0	87.5
T4	8 (3)	0	0	3	5 (3)	72.7
Total	32 (3)	2	7	18	5 (3)	80.0

Table 2 Accuracy of EUS preoperative N staging in 35 patients with gastric carcinoma

EUS stage	n	Pathologic stage			Accuracy of EUS (%)
		N0	N+
N0	20	14	6	70.0
N+	12 (3)	5	7 (3)	66.7
Total	32 (3)	19	13 (3)	68.6

(NOTES: three cases of T4N+ not surgically treated were included as being the correctly diagnosed).