TABLE 1.

Clinicopathologic Characteristics of 58 Tumors in This Study

	Entire cohort (n=58)	Discovery cohort (n=18)	Validation cohort (n=40)
Sex
Female	15	10	5
Male	43	8	35
Age (y)
Mean	66.7	67.4	66.4
Range	41–91	49–84	41–91
Tumor size (cm)
Mean	4.0	2.2	4.9
Range	0.4–16.0	0.6–5.0	0.4–16.0
Tumor depth
Mucosa	38	16	22
Submucosa	7	2	5
Advanced	13	0	13
Lymphovascular invasion
Absent	45	17	28
Present	13	1	12
Lymph node metastasis
Absent	45	18	27
Present	13	0	13