Table 2. Patient information.

Patient #	Sampling procedure	Stage	Postoperative chemotherapy	Follow-up
1	Lobectomy + lymphadenectomy	T2N1M0	Etoposide+Cisplatin X6 cycles	1 yr follow-up did no found tumor by CT scan
2	Supraclavicular lymph node biopsy	T2N3M0	Etoposide+Cisplatin X2 cycles	The tumor was significantly progressed right after chemotherapy by CT scan