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

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.