Table 2.

Summary of the literature review of 79 PDAC patients with single organ metachronous pulmonary metastasis undergoing resection of the primary tumor as well as resection of metastasis.

	Number of patients
Age
<65	18
≥65	35
NK	26
Gender
male	20
female	23
NK	36
Initial TNM staging(7th)
I	9
II	33
III	10
NK	27
Number of metastatic lesions
1	36
>1	14
NK	29
Adjuvant treatment after resection
yes	69
no	3
NK	7
Living status
alive	51
dead	28
Mortality
No	79
Yes	0

NK: not known.