Table 3 Comparison of MIAB and EUS-FNAB in diagnosing SELs ≥20-mm diameter (using the matching factor of lesion size)

Number of patients

26

50

n.s. (P = 0.051)

25

25

n.s. (P = 1.0)

Gender; male/female

10/16

19/31

n.s. (P = 0.051)

10/15

11/14

n.s. (P = 0.77)

Age; median & range

62.5 (24–79)

63.5 (28–78)

n.s. (P = 0.88)

62 (24–79)

68 (36–77)

n.s. (P = 0.27)

Lesion size (mm); median & range

26.2 (20–48)

28 (20–63)

P = 0.040

25 (20–36)

24 (20–36)

n.s. (P = 0.95)

Number of lesions in each gastric location

n.s. (P = 0.98)

n.s. (P = 0.93)

 Upper stomach

16

32

15

16

 Middle stomach

5

9

5

5

 Lower stomach

5

9

5

4

Procedural time (min); median & range

32 (9–70)

22.5 (8–55)

P = 0.043

32 (9–70)

20.5 (8–41)

P = 0.018

Success rate of tissue sampling

96.1% (25/26)

90.0% (45/50)

P = 0.062

96.0% (24/25)

96.0% (24/25)

n.s. (P = 1.0)

Diagnostic yield

92.3% (24/26)

88.0% (44/50)

n.s. (P = 0.56)

96.0% (24/25)

96.0% (24/25)

n.s. (P = 1.0)

Complication rate

0% (0/26)

0% (0/50)

n.s. (P = 1.0)

0% (0/25)

0% (0/25)

n.s. (P = 1.0)

Number and frequency of lesions of each histology type

n.s. (P = 0.12)

n.s. (P = 0.091)

 GIST

65.3% (17/26)

64.0% (32/50)

64% (16/25)

88% (22/25)

 Leiomyoma

23.1% (6/26)

16.0% (8/50)

24% (6/25)

4% (1/25)

 Schwannoma

–

6.0% (3/50)

–

4% (1/25)

 Aberrant pancreas

8.0% (2/26)

–

8% (2/25)

–

Renal cell carcinoma

2.0% (1/50)

–

–