Table 4.

Preoperative endoscopic findings of gastric intramucosal neoplasm

	SA (n = 51)	SH (n = 52)	P a
Histological type, n (%)b
Benign epithelial neoplasia			0.731
Adenoma	1 (2.0)	1 (1.9)
Malignant epithelial neoplasm
Tubc
Tub1d	27 (52.9)	30 (57.7)
Tub2e	4 (7.8)	1 (1.9)
Other	1 (2.0)f	2 (3.8)g
No biopsy done	18 (35.3)	18 (34.6)
Neoplasm location, n (%)
Upper third	6 (11.8)	7 (13.5)	0.890
Middle third	19 (37.3)	21 (40.4)
Lower third	26 (51.0)	24 (46.2)
Section of wall, n (%)
Lesser curvature	21 (41.2)	21 (40.4)	0.942
Greater curvature	11 (21.6)	13 (25.0)
Anterior curvature	9 (17.6)	10 (19.2)
Posterior curvature	11 (21.6)	9 (17.3)
Macroscopic classification, n (%)
0–I	0 (0.0)	1 (1.9)	0.472
0–IIa	16 (31.4)	22 (42.3)
0–IIc	32 (62.7)	28 (53.8)
0–IIa + IIc	2 (3.9)	1 (1.9)
0–IIb + IIc	1 (2.0)	0 (0.0)
Neoplasm size (mm), n (%)
5–9	20 (39.2)	17 (32.7)	0.786
10–14	22 (43.1)	24 (46.2)
15–20	9 (17.6)	11 (21.2)

^aFisher's exact test.

^bHistological type in biopsy with preoperative endoscopy.

^cTubular adenocarcinoma.

^dWell differentiated.

^eModerately differentiated.

^fOne patient whose histological classification was unknown.

^gOne patient who was unknown whether well differentiated or moderately differentiated, and one patient evaluated as erosive gastritis with regenerative atypia.

SA, sodium alginate; SH, sodium hyaluronate.