Correlation of tumor-positive ratio and number of perigastric lymph nodes with prognosis of gastric carcinoma in surgically-treated patients

Table 1 Correlation between lymph node metastatic ratio and survival years

Ratio of positive	n	Survival years					P
lymph nodes		1	2	3	4	5
< 20%	51	51	49	45	39	36	< 0.05
> 21%	118	104	87	66	43	14a

^aP<0.05 vs the group with lymph node metastatic ratio less than 20%.

Table 2 Correlation between lymph node metastatic number and survival years

Number	n	Survival years					P
of positive
lymph node		1	2	3	4	5
1	9	9	9	8	6	5
2	20	20	19	18	15	10	0.908
3	12	12	12	10	9	5	1.0
4	11	11	9	8	6	5	0.79
5	19	17	16	14	11	8	0.704
6	41	36	30	22	11	10	0.009
7	20	18	16	13	9	5	0.555
8	16	14	11	9	7	3	0.698
≥ 9	21	18	13	9	8	3	0.688
1-5	71	69	66	58	47	33
> 5	98	86	70	53	35	17	0.00072a

^aP < 0.05, vs the group with lymph node metastatic number more than 5.

Table 3 Correlation between lymph node metastatic ratio and tumor characteristics

Pathological	Lymph node < 20%	> 21%	P
characteristics	metastatic ratio
Size of tumor
< 4 cm	42	43	0.48
≥ 4 cm	9	74a
location
Lower third	5	8
Middle third	22	47
Upper third	24	63	< 0.001
Depth of invasion
Mucosa and submucosa	12	9
Muscle and subserosa	16	6
Serosa	23	103b	< 0.001

^aP < 0.05,

^bP < 0.05 vs the group with lymph node metastatic ratio less than 20%.

Table 4 Correlation between number of involved lymph nodes and tumor characteristics

Pathological	Number of positive	> 5	P
characteristics	lymph nodes 1-5
Size of tumor
< 4 cm	51	34
≥ 4 cm	20	64a	0.48
location
Lower third	7	6
Middle third	31	38
Upper third	33	54	< 0.05
Depth of invasion
Mucosa and submucosa	20	1
Muscle and subserosa	18	4
Serosa	33	93b	< 0.05

^aP < 0.05,

^bP < 0.05 vs the group with lymph node metastatic num-ber more than 5.