Impact of the Number of Dissected Lymph Nodes on Survival for Gastric Cancer after Distal Subtotal Gastrectomy

Table 4

Five-year overall survival by stage subgroups and total number of resected LNs.

Subgroup	N	Number of resected LNs [n, OS (%)]							P
		0~9	10~14	15~19	20~24	25~29	30~34	≥35
Depth of invasion
pT1	118	6 (62.5)	15 (80.0)	27 (88.9)	29 (93.1)	18 (88.9)	12 (91.7)	11 (100.0)	0.025
pT2	106	7 (28.6)	11 (27.3)	18 (66.7)	28 (75.0)	26 (73.1)	10 (90.0)	8 (87.5)	0.000
pT3	68	3 (33.3)	5 (40.0)	13 (53.8)	15 (60.0)	9 (66.7)	10 (70.0)	11 (72.7)	0.005
pT4a	342	16 (20.2)	44 (23.9)	53 (31.5)	89 (44.4)	65 (50.7)	46 (55.1)	29 (69.0)	0.000

NA: Not applicable; OS: Overall 5-year survival rate.