Is it possible to differentiate gastric GISTs from gastric leiomyomas by EUS?

Table 4 Univariate analysis of EUS features between benign and malignant GISTs of the stomach n (%)

Variables	Benign GIST (n = 33)	Malignant GIST (n = 13)	P-value
Size (cm, mean ± SD)	2.5 ± 1.0	6.0 ± 2.7	0.001
Ulcer			0.299
Absent	24 (72.7)	7 (53.8)
Present	9 (27.3)	6 (46.2)
Growth			0.145
In	26 (78.8)	7 (53.8)
Out	7 (21.2)	6 (46.2)
Border			0.044
Regular	24 (72.7)	5 (38.5)
Irregular	9 (27.3)	8 (61.5)
Lobulation			0.743
Absent	17 (51.5)	6 (46.2)
Present	16 (48.5)	7 (53.8)
Marginal halo			0.240
Absent	9 (27.3)	1 (7.7)
Present	24 (72.7)	12 (92.3)
Echogenicity in comparison with the surrounding muscle echo			0.115
Isoechoic	16 (48.5)	3 (23.1)
Hyperechoic	17 (51.5)	10 (76.9)
Homogeneity			0.199
Homogenous	8 (24.2)	1 (7.7)
Inhomogenous	25 (75.8)	12 (92.3)
Cystic changes			0.082
Absent	25 (75.8)	6 (46.2)
Present	8 (24.2)	7 (53.8)
Hyperechogenic spots			1.000
Absent	4 (12.1)	1 (7.7)
Present	29 (87.9)	12 (92.3)
Calcification			0.385
Absent	29 (87.9)	10 (76.9)
Present	4 (12.1)	3 (23.1)