Table 1.

Clinical characteristics of 20 patients.

No.	Gender	Diagnosis	Stage	Histological Type	CTC Count (N)
1	Male	Lung cancer	IV	Adenocarcinoma	43
2	Female	Lung cancer	IV	Adenocarcinoma	21
3	Male	Lung cancer	IV	Small cell carcinoma	6
4	Male	Lung cancer	IV	Large cell carcinoma	10
5	Female	Lung cancer	IV	Adenocarcinoma	31
6	Male	Lung cancer	IV	Adenocarcinoma	9
7	Male	Lung cancer	IV	Adenocarcinoma	0
8	Female	Lung cancer	IIIC	Adenocarcinoma	15
9	Female	Lung cancer	IV	Adenocarcinoma	13
10	Male	Lung cancer	Postoperative	Adenocarcinoma	0
11	Male	Lung cancer	IIA	Adenocarcinoma	14
12	Female	Lung cancer	IV	Adenocarcinoma	9
13	Female	Lung cancer	IV	Adenocarcinoma	12
14	Male	Lung cancer	IV	Squamous cell carcinoma	17
15	Female	Lung cancer	IIIB	Adenocarcinoma	6
16	Male	Lung cancer	IA	Adenocarcinoma	26
17	Male	Pneumonia	— 2	— 2	0
18	Male	COPD 1	— 2	— 2	0
19	Male	COPD 1	— 2	— 2	0
20	Male	COPD 1	— 2	— 2	0

¹ COPD, chronic obstructive pulmonary disease; ² “—”, no such information.