1. Is routine dissection of the station 9 lymph nodes really necessary for primary lung cancer? 
Fenghao Sun, Cheng Zhan, Mengkun Shi, Xiaodong Yang, Lin Wang, Wei Jiang, Zongwu Lin, Junjie Xi, Yu Shi, Qun Wang 
International Journal of Surgery 
Volume 34, Pages (October 2016)
DOI: /j.ijsu
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2. Fig. 1 Flow chart of selection of cases and control subjects.
International Journal of Surgery  , 53-57DOI: ( /j.ijsu )
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3. Fig. 2
Metastasis rate of each mediastinal lymph node station (station 2, upper paratracheal; station 3, pre-vascular and retrotracheal; station 4, lower paratracheal; station 5, sub-aortic; station 6, para-aortic; station 7, sub-carinal; station 8, paraesophageal; and station 9, pulmonary ligament). A chi-square test was used to compare the metastasis rate of station 9 with other mediastinal stations. *p < 0.05; ***p < 0.001.
International Journal of Surgery  , 53-57DOI: ( /j.ijsu )
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4. Fig. 3
Survival analysis between station 9-positive and -negative groups. (four 9-positive patients and seven 9-negative patients were lost to follow-up immediately after surgery.)
International Journal of Surgery  , 53-57DOI: ( /j.ijsu )
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