Additional laparoscopic gastrectomy after noncurative endoscopic submucosal dissection for early gastric cancer: A single-center experience

Table 4 Characteristics of patients with and without lymph node metastasis in surgical specimens, n (%)

Characteristic	LNM		P-value
	Yes (n = 5)	No (n = 40)
Location			0.417
Upper third	3 (17.6)	14 (86.7)
Middle third	0 (0)	11 (100)
Lower third	2 (11.8)	15 (88.2)
Macroscopic appearance			0.125
Elevated type	1 (25)	3 (75)
Surface type	3 (7.7)	36 (92.3)
Depressed type	1 (50)	1 (50)
Tumor size			1.000
< 3 cm	3 (11.5)	23 (89.5)
≥ 3 cm	2 (10.5)	17 (89.5)
Differentiation			0.027
Differentiated	1 (3.2)	30 (96.8)
Undifferentiated	4 (28.6)	10 (71.4)
Lauren type			0.665
Intestinal	3 (13.6)	19 (86.4)
Diffused/Mixed	2 (8.7)	21 (91.3)
Depth of invasion			0.305
Mucosal invasion/SM1	0 (0)	14 (100)
> SM1 invasion	5 (16.1)	26 (83.9)
Horizontal margin			0.577
Positive	0 (0)	7 (100)
Negative	5 (13.2)	33 (86.8)
Vertical margin			1.000
Positive	3 (10.3)	26 (89.7)
Negative	2 (12.5)	14 (87.5)
Lymphovascular invasion			0.636
Yes	3 (15.8)	16 (84.2)
No	2 (7.7)	24 (92.3)
Neural invasion			1.000
Yes	1 (9.1)	10 (90.9)
No	4 (11.8)	30 (88.2)

LNM: Lymph node metastasis.