Endosonographic surveillance of 1-3 cm gastric submucosal tumors originating from muscularis propria

Table 1 Basic characteristics and endoscopic ultrasound findings in 88 patients with suspected gastrointestinal stromal tumors in the stomach

Basic characteristic or EUS finding	Stationary group n = 63	Progressive group n = 25	P value
Age (mean ± SD, yr)	57.4 ± 10.6	56.4 ± 12.4	0.690
Sex (M/F)	35/28	9/16	0.100
Location			0.650
Cardia	16	5
Fundus	16	8
Body	24	11
Antrum	7	1
EUS tumor size and echotexture
Initial tumor size (mean ± SD, mm)	13.9 ± 4.5	16.6 ± 5.5	0.020
Homogeneous/ heterogeneous hypoechoicity	44/19	12/13	0.060
Smooth/irregular tumor border	56/7	15/10	0.002
With/without internal cystic change or calcification	8/55	4/21	0.680
EUS surveillance
Surveillance duration (mean ± SD, mo)	24.6 ± 20.3	30.7 ± 21.7	0.220

EUS: Endoscopic ultrasound.