Lymph node metastasis in gastric cardiac adenocarcinoma in male patients

Table 1 Demographics and clinicopathological features of gastric cardiac adenocarcinoma

Factors	Sex		P value
	Total (n = 146)	Female (n = 35)		Male (n =111)
Age (yr)				0.668
< 60	46	10	36
≥ 60	100	25	75
Type of gastrectomy				0.776
Total	53	12	41
Proximal gastrectomy	93	23	70
Splenectomy				0.102
Presence	8	0	8
Absence	138	35	103
Tumor size (cm)				0.717
< 2	2	0	2
2-5	93	23	70
> 5	51	12	39
Gross appearance				0.931
Type 0	6	2	4
Type 1	13	3	10
Type 2	105	26	79
Type 3	13	2	11
Type 4	9	2	7
Tumor differentiation				0.389
Differentiated	76	16	60
Undifferentiated	70	19	51
Lymph nodes retrieved	22.88 ± 9.162	23.06 ± 9.449	22.78 ± 9.089	0.602
Pathological tumor depth				0.729
T1	8	2	6
T2	16	2	14
T3	4	1	3
T4	118	30	88
Node status (TNM)				0.665
pN0	43	11	32
pN1	27	4	23
pN2	29	8	21
pN3	47	12	35
pTNM staging				0.445
I	15	2	13
II	37	11	26
III	94	22	72
IV
Lymphatic invasion				0.694
Positive	24	5	19
Negative	122	30	92
Venous invasion				0.393
Positive	5	2	3
Negative	141	33	108
Nerve invasion				0.350
Positive	22	7	15
Negative	124	28	96
Esophageal involvement				0.497
Presence	31	6	25
Absence	115	29	86

TNM: Tumour, node, metastasis.