Synchronous and metachronous neoplasms in gastric cancer patients: A 23-year study

Table 2 Comparision of the clinicopathological features of gastric cancer patients with metachronous and synchronous tumors n (%)

Characteristic	Total	Metachronous	Synchronous	P value
Gender				0.139
Male	34	18 (52.9)	16 (72.7)
Female	22	16 (47.1)	6 (27.3)
Total1	56	34	22
Age2 (yr)	63.1 ± 11.3	59.9 ± 11.1	68.0 ± 10.3	0.008
DS (mo)	27.3 ± 46.9	31.7 ± 44.0	22.1 ± 54.0	0.217
FHC				0.249
No	26	14 (53.8)	12 (46.2)
Yes	25	18 (72.0)	7 (28.0)
Total	51
Location3				0.724
Proximal	10	7 (70.0)	3 (30.0)
Other location	46	27 (58.7)	19 (41.3)
Total	56
Histology				0.835
Intestinal	24	16 (66.7)	8 (33.3)
Diffuse	17	12 (70.6)	5 (29.4)
Mixed	2	1 (50.0)	1 (50.0)
Total	43
Stage				0.553
Early	13	7 (53.8)	6 (46.2)
Advanced	38	24 (63.2)	14 (36.8)
Total	51
Blood group				0.675
A	13	9 (69.2)	4 (30.8)
B	8	4 (50.0)	4 (50.0)
O	25	15 (60.0)	10 (40.0)
AB	None	None	None
Total	46

¹Two patients were excluded from this comparison because they developed both metachronous and synchronous cancers;

²Data are expressed as mean ± SD;

³Tumor location. DS: Duration of symptoms; FHC: Family history of cancer.