Table 6. Disease-free survival of metastasis tumor.

Approaches	Study	N	DFS (months)	Survival Rate
				1-year	2-year	3-year	5-year
Thoracotomy	Mutsaerts et al 2002[22]	19	<10	—	42	—	—
Thoracotomy	Nakajima et al 2008[2]	71	27	57.6	—	26.2	21.1
Thoracotomy	Carballo et al 2009[15]	135	24.8	87.4	—	67.9	58.8
Thoracotomy	Nakas et al 2009[12]	27	29	—	—	—	—
VATS	Mutsaerts et al 2002[22]	16	<10	—	50	—	—
VATS	Nakajima et al 2008[2]	72	23.8	64.6	—	42.6	34.4
VATS	Carballo et al 2009[15]	36	25.6	91.7	—	69.6	69.6
VATS	Nakas et al 2009[12]	25	20	—	—	—	—
Transxiphoid HATS	Mineo et al 2001[24]	29	19	—	—	—	—
Transxiphoid HATS	Mineo et al 2007[25]	71	12	—	—	—	—
Our HATS	Current study	65	27.4	84.4	61.8	44.3	31.9

N: Number of cases.

—: No data obtained.