Table 1.
Characteristics of the patients and tumours.
| Variable | Category | Number (%) |
|---|---|---|
| Sex | Male | 38 (43.7) |
| Female | 49 (56.3) | |
|
| ||
| Median age (range) | 58.0 ± 11.1 (27–81) | |
|
| ||
| Smoking | Current smoker | 66 (75.9) |
| Never smoked | 21 (24.1) | |
|
| ||
| Radiological finding | Pure GGO | 19 (21.8) |
| Mixed GGO | 51 (58.6) | |
| Pure solid nodule | 17 (19.6) | |
|
| ||
| CEA | ≤5 ng/mL | 74 (85.1) |
| >5 ng/mL | 13 (14.9) | |
|
| ||
| Serum miR-183 | ≤1.0 (2−ΔΔCt) | 43 (49.4) |
| >1.0 (2−ΔΔCt) | 44 (50.6) | |
|
| ||
| Tumour size | ≤10 mm | 42 (48.3) |
| >10 to ≤20 mm | 30 (34.5) | |
| >21 to ≤30 mm | 15 (17.2) | |
|
| ||
| Nodule number | Single | 82 (94.3) |
| Multiple | 5 (5.7) | |
|
| ||
| Predominant subtype | AIS | 19 (21.8) |
| MIA | 22 (25.3) | |
| Lepidic-predominant IAC | 11 (12.7) | |
| Papillary-predominant IAC | 23 (26.4) | |
| Acinar-predominant IAC | 9 (10.3) | |
| Solid-predominant IAC | 2 (2.3) | |
| Invasive mucinous IAC | 1 (1.2) | |
|
| ||
| Lymph node metastasis | Present | 4 (4.6) |
|
| ||
| Visceral pleural invasion | Present | 9 (10.3) |
|
| ||
| Pathological stage | 0 | 5 (5.7) |
| I | 76 (87.4) | |
| II | 4 (4.6) | |
| III | 2 (2.3) | |
CEA, carcinoembryonic antigen; GGO, ground-glass opacity; AIS, adenocarcinoma in situ; MIA, minimally invasive adenocarcinoma; IAC, invasive adenocarcinoma.