Journal of Oncology

Research Article

Clinical Features of Extragastrointestinal Stromal Tumor Compared with Gastrointestinal Stromal Tumor: A Retrospective, Multicenter, Real-World Study

Baseline characteristics before and after propensity score matching.


	No. (%)
	Before matching			After matching
Characteristic	GIST (n = 221)	EGIST (n = 55)	Standardized difference	GIST (n = 43)	EGIST (n = 43)	Standardized difference

Sex (%)
Female	106(48.0)	24 (43.6)	0.087	18 (41.9)	19 (44.2)	0.047
Male	115 (52.0)	31 (56.4)	0.087	25 (58.1)	24 (55.8)	0.047
Age (%)
≤60 years	112 (50.7)	31 (56.4)	0.114	30 (69.8)	26 (60.5)	0.196
>60 years	109 (49.3)	24 (43.6)	0.114	13 (30.2)	17 (39.5)	0.196
ECOG (%)
0	67 (30.3)	11 (20.0)	0.326	9 (20.9)	11 (25.6)	0.231
1	118 (53.4)	38 (69.1)		32 (74.4)	28 (65.1)
>1	36 (16.3)	6 (10.9)		2 (4.7)	4 (9.3)
Tumor size (%)
≤10 cm	182 (82.4)	22 (40.0)	0.965	24 (55.8)	22 (51.2)	0.093
>10 cm	39 (17.6)	33 (60.0)	0.965	19 (44.2)	21 (48.8)	0.093
Tumor necrosis (%)
Yes	54 (24.4)	33 (60.0)	0.772	22 (51.2)	21 (48.8)	0.047
No	167 (75.6)	22 (40.0)	0.772	21 (48.8)	22 (51.2)	0.047
Tumor mitosis (%)
≤5/50 HPF	137 (62.0)	30 (54.5)	0.151	22 (51.2)	24 (58.1)	0.140
>5/50 HPF	84 (38.0)	25 (45.5)	0.151	21 (48.8)	18 (41.9)	0.140
Histopathological classification (%)
Spindle	187 (84.6)	42 (76.4)	0.209	35 (81.4)	33 (76.7)	0.115
Others	34 (15.4)	13 (23.6)	0.209	8 (18.6)	10 (23.3)	0.115
Adjuvant therapy (%)
Accepted	77 (34.8)	20 (36.4)	0.032	19 (44.2)	17 (39.5)	0.094
Not accepted	144 (65.2)	35 (63.6)	0.032	24 (55.8)	26 (60.5)	0.094