Table 1 Patient and lesion characteristics

Number of patients

71

106

Gender; male/female

31/40

56/50

n.s. (P = 0.23)

Age; median & range

62 (27–84)

63 (27–87)

n.s. (P = 0.95)

Lesion size (mm); median & range

19.6 (8.8–48)

20.0 (9–63)

n.s. (P= 0.096)

Number of lesions in each gastric location

n.s. (P= 0.61)

 Upper stomach

40

66

 Middle stomach

18

26

 Lower stomach

13

14

Procedural time (min); median & range

31.5 (9–160)

21.0 (8–55)

P < 0.0001

Success rate of tissue sampling

95.6% (68/71)

86.8% (92/106)

P = 0.047

Diagnostic yield

94.3% (67/71)

79.2% (84/106)

P = 0.013

Complication rate

0% (0/71)

0% (0/106)

n.s (P = 1.0)

Number of lesions of each histology type

n.s. (P = 0.053)

GIST

53.5% (38/71)

60.4% (64/106)

 Leiomyoma

25.3% (18/71)

11.3% (12/106)

 Schwannoma

2.8% (2/71)

3.8% (4/106)

 Aberrant pancreas

8.5% (6/71)

2.8% (3/106)

 Glomus tumor

1.4% (1/71)

–

 Lipoma

1.4% (1/71)

–

 Inflammatory change

1.4% (1/71)

–

 Renal cell carcinoma

–

0.9% (1/106)

Matching rate of pre- and post-operative diagnoses

100% (35/35)

100% (34/34)

n.s. (P = 1.0)