Forward-viewing radial-array echoendoscope for staging of colon cancer beyond the rectum

Table 1 Number of patients with colon cancer classified according to endoscopic ultrasound vs surgical pathological T staging

EUS/Histology	T1	T2	T3	T4	Total
uT1	2	0	0	0	2
uT2	0	3	2	0	5
uT3	1	1	11	0	13
uT4	0	0	0	1	1
Total	3	4	13	1	21

Tumors were pathologically staged as T1 (n = 3), T2 (n = 4), T3 (n = 13) and T4 (n = 1). Ultrasonographic T staging was T1 (n = 2), T2 (n = 5), T3 (n = 13) and T4 (n = 1). EUS: Endoscopic ultrasound; u: Ultrasound; T: Tumor.