Clinicopathological study of cardiac tamponade due to pericardial metastasis originating from gastric cancer

Table 2 Clinicopathological analysis of cardiac tamponade due to PC from GC

Male:female	11:06
Mean age (yr; n = 17)	54.0 (range: 33-6)
Male	58.0 (range: 42-69)
Female	46.3 (range: 33-65)
Histological types (n = 14)
Sig	7
Por	3
Ud	1
Tub	3
T (n = 13)
1	3
2	9
3	1
ly (n = 12)
0	1
1	1
2	5
3	5
v (n = 10)
0	3
1	3
2	3
3	1
n (n = 12)
0	3
1	2

The histological types, “T”, “ly”, “v”, and “n”, are defined in the General Rules for the Gastric Cancer Study by Japanese Research Society for Gastric Cancer[26]. sig: signet-ring cell carcinoma; por: poorly differentiated carcinoma; ud: undifferentiated carcinoma; and tub: tubular adenocarcinoma. For T which represents depth of cancer invasion, 1: mucosal and submucosal layer; 2: proper muscular and subserosal layer; 3: expose to serosal layer; and 4: invasion to the adjacent organ. For ly and v which represent lymphatic permeation and venous permeation, respectively, 0: none; 1: slight; 2: moderate; and 3: massive.