Diagnosis of early gastric cancer using narrow band imaging and acetic acid

Table 1 Characteristics of patients with depressed-type electrocardiograph

Characteristics
No. of patients	72
Sex (M/F)	47/25
Tumors	90
Mean age	64 (28-89)
Size (major axis)	16.5 mm (5-52 mm)
Histological diagnosis
Differentiated	67
Undifferentiated	23
Depth
Mucosal	84
Submucosal	6

Table 2 Associations between the microvascular pattern by magnifying endoscopy with narrow band imaging and histological type

	Differentiated	Undifferentiated	Total	P value
#1
Irregular	50	17	67	0.4174
Regular	8	1	9
Absent	9	5	14
#2
Fine network	25	0	25	< 0.001
Corkscrew	5	18	23
Unclassified	37	5	42

Table 3 Associations between the findings of magnifying endoscopy and histological type

	Differentiated	Undifferentiated	Total	P value
Shape
Sessile barnacle	4	0	4	0.1169
Villous	21	1	22
Unclassified	12	4	16
Width of Crypt
Narrow	16	0	16	0.0901
Wide	9	1	10
Unclassified	12	4	16
Regularity
Irregular	19	0	19	0.0735
Regular	6	1	7
Unclassified	12	4	16

Table 4 Associations between the findings of magnifying endoscopy with acetic acid staining and histological type

	Differentiated	Undifferentiated	Total	P value
Shape
Sessile barnacle	10	0	10	0.0010
Villous	23	1	24
Unclassified	4	4	8
Width of Crypt
Narrow	29	0	29	0.0005
Wide	4	1	5
Unclassified	4	4	8
Regularity
Irregular	31	0	31	0.0003
Regular	2	1	3
Unclassified	4	4	8