Mucosal-incision assisted biopsy for suspected gastric gastrointestinal stromal tumors

Table 1 Characteristics of the patients with submucosal tumor who underwent mucosal-incision assisted biopsy

Case	Age	Sex	Location of SMT	Size (mm)	Growth pattern	Diagnosis by MIAB	Post-operativediagnosis
1	70	M	Body, LC	21	Intraluminal	GIST	GIST
2	60	M	Body, LC	20	Intraluminal	GIST	GIST
3	55	F	Angulus, LC	36	Intraluminal	GIST	GIST
4	73	M	Body, LC	26	Intraluminal	GIST	GIST
5	72	F	Body, LC	20	Intraluminal	GIST	Not applicable
6	69	F	Fundus	19	Intraluminal	GIST	GIST
7	72	F	Body, LC	23	Intraluminal	GIST	GIST
8	53	M	Body, PW	23	Intraluminal	GIST	GIST
9	79	F	Body, GC	24	Intraluminal	GIST	GIST
10	66	F	Angulus, GC	22	Intraluminal	GIST	GIST
11	66	F	Body, PW	25	Intraluminal	GIST	GIST
12	39	M	Body, PW	15	Intraluminal	GIST	GIST
13	58	M	Body, GC	20	Intraluminal	GIST	GIST
14	24	M	Cardia, AW	30	Intraluminal	GIST	GIST
15	60	F	Body, PW	10	Intraluminal	GIST	Not applicable
16	57	M	Body, PW	20	Intraluminal	GIST	GIST
17	40	F	Body, PW	30	Intraluminal	IS	GIST
18	55	M	Cardia, LC	23	Intraluminal	Leiomyoma	Not applicable
19	36	F	Cardia, LC	19	Intraluminal	Leiomyoma	Not applicable
20	62	F	Cardia, LC	25	Intraluminal	Leiomyoma	Not applicable
21	57	F	Body, LC	15	Intraluminal	Leiomyoma	Not applicable
22	50	M	Antrum, AW	20	Intraluminal	Glomus tumor	Glomus tumor
23	63	M	Body, LC	20	Intraluminal	Aberrant pancreas	Not applicable
24	57	M	Body, GC	20	Intraluminal	Inflammatory change	Not applicable
25	66	M	Body, GC	15	Extraluminal	IS	Not applicable
26	71	F	Body, LC	15	Extraluminal	IS	Not applicable
27	61	F	Antrum, GC	17	Extraluminal	IS	Not applicable

IS: Insufficient samples for diagnosis; GIST: Gastrointestinal stromal tumor; MIAB: Mucosal-incision assisted biopsy; SMT: Submucosal tumor; PW: Posterior wall; LC: Lesser curvature; GC: Greater curvature; M: Male; F: Female.

Table 2 Summary of the cases which underwent mucosal-incision assisted biopsy

Age	58.9 ± 2.4 (27)
Sex	Female (13)/male (14)
Location of SMT	Fundus (1)
	Cardia (4)
	Body (18)
	Angulus (2)
	Antrum (2)
Size of the lesion (mm)	21.2 ± 1.0 (27)
Growth pattern	Intraluminal (24)
	Extraluminal (3)
Diagnosis by MIAB	GIST (16)
	Leiomyoma (4)
	Aberrant pancreas (1)
	Inflammatory changes (1)
	Glomus tumor (1)
	Not diagnosed (4)

GIST: Gastrointestinal stromal tumor; MIAB: Mucosal-incision assisted biopsy; SMT: Submucosal tumor.