Table 3.

Characteristics of the Cases Which Did Not Reach Diagnosis

No.	Age	Size (mm)	Number of biopsies	Tumor exposed	Tumor location	Cross-sectional tumor location	Degree of bleeding	Factors that might be related to failure besides tumor exposure
1	72	20	12	No	Middle	P	Slight	-
2	56	10	6	Unclear	Upper	P	Slight	Small tumor, surrounding field biopsies due to the tumor’s mobility
3	65	23	6	Unclear	Upper	G	Moderate	-
4	72	16	5	No	Upper	P	Massive	-
5	57	25	10	No	Upper	G	Moderate	-
6a)	59	15	10	No	Upper	G	Moderate	Small tumor
7a)	59	15	5	No	Upper	G	Massive	Tumor less elevated than before
8	65	25	10	No	Middle	P	Slight	-
9	41	12	10	Unclear	Upper	P	Massive	Poor endoscope maneuverability, surrounding field biopsies due to the tumor’s mobility
10	46	30	10	Unclear	Lower	L	Slight	-

G, greater curvature; L, lesser curvature; P, posterior wall.

^a)Cases No. 6 and No. 7 are the same lesions. The lesion was reexamined (No. 7) because no diagnosis was obtained during the original procedure (No. 6).