Prognosis of patients with gastric cancer and solitary lymph node metastasis

Table 1 Characteristics of gastric cancer + solitary lymph node metastasis during clinical management, stratified by age n (%)

Parameter	Age (yr)			All patients (n = 965)
	≤50 (n = 198)	50-64 (n = 321)	≥65 (n = 446)
Sex
Male	117 (59.1)	207 (64.5)	272 (61.0)	596 (61.8)
Female	81 (40.9)	114 (35.5)	174 (39.0)	369 (38.2)
Tumor location
Upper stomach	15 (7.6)	28 (8.7)	40 (9.0)	83 (8.6)
Middle stomach	79 (39.9)	131 (40.8)	183 (41.0)	393 (40.7)
Lower stomach	104 (52.5)	162 (50.5)	223 (50.0)	489 (50.7)
Gross type (Borrmann)
I	5 (2.5)	10 (3.1)	19 (4.3)	34 (3.5)
II	51 (25.8)	59 (18.4)	103 (23.1)	213 (22.1)
III	78 (39.4)	182 (56.7)	205 (45.9)	465 (48.2)
IV	64 (32.3)	70 (21.8)	119 (26.7)	253 (26.2)
Histological type
High differentiation	1 (0.5)	2 (0.6)	4 (0.9)	7 (0.7)
Moderate differentiation	27 (13.6)	79 (24.6)	119 (26.7)	225 (23.3)
Low differentiation	170 (85.9)	240 (74.8)	323 (72.4)	733 (76.0)
Tumor status
T1	16 (8.1)	29 (9.1)	42 (9.4)	87 (9.0)
T2	36 (18.2)	53 (16.5)	87 (19.5)	176 (18.2)
T3	75 (37.9)	125 (38.9)	194 (43.5)	394 (40.8)
T4	71 (35.8)	114 (35.5)	123 (27.6)	308 (32.0)
Metastasis lymph node ratio
≥ 0.06	12 (6.1)	32 (10.0)	54 (12.1)	98 (10.2)
0.04-0.06	155 (78.3)	230 (71.7)	302 (67.7)	687 (71.2)
< 0.04	31 (15.6)	59 (18.3)	90 (20.2)	180 (18.6)
Postoperative chemotherapy
No	4 (2.0)	11 (3.4)	29 (6.5)	43 (4.5)
Yes	194 (98.0)	310 (96.6)	417 (93.5)	922 (95.5)
Surgery
Subtotal gastric resection	113 (57.1)	181 (56.4)	238 (53.4)	532 (55.1)
Total gastrectomy	85 (42.9)	140 (43.6)	208 (46.6)	433 (44.9)