Surgical resection of esophagogastric junction stromal tumor: How to protect the cardiac function

Table 1 Comparison of clinical and pathologic variables of study patients

Variables	CR group	PG group	P value
Age, median (range), in yr	58 (32-73)	61 (28-75)	0.532
Sex			0.168
Male	8	16
Female	10	9
Size in cm			0.549
≤ 2	1	0
2.1-5.0	6	6
5.1-10	7	13
> 10	4	6
Histologic type			0.71
Spindle	13	18
Epitheloid	1	3
Mixed	4	4
Mitotic index, per 50 HPF			0.766
≤ 5	13	17
> 5	5	8
Ki-67			0.163
≤ 5%	15	16
> 5%	3	9
CD117			0.929
Positive	16	22
Negative	2	3
CD34			0.159
Positive	15	24
Negative	3	1
DOG-1			0.083
Positive	13	23
Negative	5	2
NIH risk category			0.476
Very low risk	1	0
Low risk	5	4
Intermediate risk	7	12
High risk	5	9
Length of the upper edge of the GIST crossing the Z-line, mean ± SD (cm)	0.639 (0.29)	1.024 (0.395)	0.193
Circumference of the EGJ involvement			0.716
T ≤ 1/4	10	13
1/4 < T ≤ 2/4	7	8
2/4 < T ≤ 3/4	1	3
T > 3/4	0	1
Heartburn, postoperative
Yes	3	16	0.004
No	15	9
Oral antacids, postoperative
Yes	4	18	0.002
No	14	7

CR: Conformal resection; EGJ: Esophagogastric junction; GIST: Gastrointestinal stromal tumor; HPF: High-power field; PG: Proximal gastrectomy; T: Tumor.