Clinical course of suspected small gastrointestinal stromal tumors in the stomach

Table 1 Four hundred and ten suspected gastric gastrointestinal stromal tumors in 383 patients: Comparing demographic and lesion characteristics of lesions with or without size increment

	All lesions	Lesions without size increment	Lesions with size increment	P value
Patients, n1	383	375	8	-
Age, yr2	54 (10; 23-80)	54 (10; 23-80)	57 (16; 31-74)	0.5724
Sex, male/female, n	121/262	115/260	6/2	0.0145
Lesions, n1	410 (100%)	402 (98.0%)	8 (2.0%)	-
Distribution, n				0.3665
Single lesion	362 (94.5%)	355 (94.7%)	7 (87.5%)
Two lesions	16 (4.2%)	15 (4.0%)	1 (12.5%)
Three lesions	4 (1.0%)	4 (1.1%)	0 (0%)
Four lesions	1 (0.3%)	1 (0.3%)	0 (0%)
Location, n				0.1395
Cardia	50 (12.2%)	49 (12.2%)	1 (12.5%)
Fundus	232 (56.6%)	230 (57.2%)	2 (25.0%)
Body	119 (29.0%)	114 (28.4%)	5 (62.5%)
Antrum	9 (2.2%)	9 (2.2%)	0 (0%)
Initial size, mm3	7 (6-10; 3-20)	7 (6-10; 3-20)	12 (9-13; 4-15)	0.0186
Less than 10 mm, n	291 (71.0%)	289 (71.9%)	2 (25.0%)	0.0095
10-20 mm, n	119 (29.0%)	113 (28.1%)	6 (75.0%)
Follow-up, mo3	28 (16-48; 3-156)	27 (15-47; 3-156)	60 (46-83; 41-146)	0.0016

¹Sixteen patients had 2 lesions (one lesion in these patients increased in size during follow-up), 4 patients had 3 lesions, and 1 patient had 4 lesions.

²Age was expressed as mean (standard deviation; range).

³Initial size and follow-up were expressed as median (interquartile range; range).

⁴Student’s t-test.

⁵Fisher’s exact test.

⁶Mann–Whitney U test.