Multi-slice spiral computed tomography in differential diagnosis of gastric stromal tumors and benign gastric polyps, and gastric stromal tumor risk stratification assessment

Table 6 Comparison of computed tomography sign parameters in gastric stromal tumor groups with different risk classes, n (%)

CT signs	Low-intermediate-risk group (n = 41)	High-risk group (n = 23)	χ2 value	P value
Lesion location			2.180	0.703
Fundus of stomach	7 (17.07)	5 (21.74)
Cardia	4 (9.76)	2 (8.70)
Greater curvature of the stomach	15 (36.59)	11 (47.83)
Lesser curvature of stomach	9 (21.95)	2 (8.70)
Gastric antrum	6 (14.63)	3 (13.04)
Tumor shape			1.539	0.215
Smooth	34 (82.93)	16 (69.57)
Lobulated	7 (17.07)	7 (30.43)
Growth pattern			5.520	0.063
Intraluminal	17 (41.46)	5 (21.74)
Extraluminal	16 (39.02)	16 (69.57)
Mixed way	8 (19.51)	2 (8.70)
Calcification			0.039	0.844
Yes	3 (7.32)	2 (8.70)
No	38 (92.68)	21 (91.3)
Lesion border			4.158	0.041
Clear	10 (24.39)	1 (4.35)
Blurry	31 (75.61)	22 (95.65)
Reinforcement			0.181	0.670
Uniform	34 (82.93)	20 (86.96)
Uneven	7 (17.07)	3 (13.04)
Ulcer			4.187	0.041
Yes	8 (19.51)	10 (43.48)
No	33 (80.49)	13 (56.52)

CT: Computed tomography.