Evaluation of the Diagnostic Ability of Optical Enhancement System in Early Gastric Cancer Demarcation

Table 1

Clinicopathological features of the early gastric carcinomas.

Patient age (years)	Mean	73.6
Sex	Male	18
	Female	2
Location	Upper	3
	Middle	13
	Lower	4
Lesion diameter	<10 mm	6
	10–20 mm	11
	>20 mm	3
Macroscopic type	Elevated type	10
	Depressed type	10
Color	Reddish	14
	Normal-colored	2
	Discolored	4
Tumor differentiation	Differentiated	18
	Undifferentiated	2
Invasion depth	Mucosal layer	10
	Submucosal layer	10