TABLE 2.
Characteristics of 123 lung cancer cases according to circulating tumor cell (CTC) counts (CTC ≥ 1/CTC = 0)
| Characteristic | CTC ≥ 1 (n = 58) | CTC = 0 (n = 65) | P value |
|---|---|---|---|
| Age (y); median (range) | 74.0 (42‐91) | 73.0 (49‐91) | .883 |
| Sex | |||
| Male | 36 (62.1) | 43 (66.2) | .637 |
| Female | 22 (37.9) | 22 (33.8) | |
| Tumor laterality | |||
| Right | 32 (55.2) | 41 (63.1) | .373 |
| Left | 26 (44.9) | 24 (36.9) | |
| Histology | |||
| Adenocarcinoma | 34 (58.6) | 45 (69.2) | .206 |
| Squamous cell carcinoma | 17 (29.3) | 13 (20.0) | |
| Small cell carcinoma | 3 (5.2) | 4 (6.2) | |
| Others | 4 (6.9) | 3 (4.6) | |
| TNM stage | |||
| IA/IB | 5 (8.6)/4 (6.9) | 13 (20.0)/12 (18.5) | .217 |
| IIA/IIB | 2 (3.4)/7 (12.1) | 5 (7.7)/2 (3.1) | |
| IIIA/IIIB/IIIC | 6 (10.3)/4 (6.9)/2 (3.4) | 9 (13.8)/2 (3.1)/1 (1.5) | |
| IVA/IVB | 15 (25.9)/13 (22.4) | 11 (16.9)/10 (15.4) | |
| Classification | |||
| Surgery | 26 (44.8) | 45 (69.2) | .0062 |
| Postadjuvant therapy | 2 (7.7) | 1 (2.2) | |
| Chemotherapy | 32 (55.2) | 20 (30.8) | |
| First line | 29 (90.6) | 16 (80.0) | |
| More than second line | 3 (9.4) | 4 (20.0) | |
| CTC counts (median, average) | 2, 3.67 | 0, 0 | |
Data are shown as n (%) unless otherwise indicated.