Table I.
Variables | Cases, n (%) |
---|---|
Median age, years (range) | 58 (36–76) |
Gender | |
Male | 130 (61.3) |
Female | 82 (38.7) |
Smoking history | |
Never | 97 (45.8) |
Formera/current | 115 (54.3) |
Pathological diagnosis | |
AIS | 44 (20.8) |
MIA | 62 (29.2) |
IAC | 106 (50.0) |
Image patterns | |
pGGO | 83 (39.2) |
mGGO | 61 (28.8) |
sGGO | 68 (32.0) |
EGFR mutation status | |
Wild type | 134 (63.2) |
L858R | 34 (16.0) |
Exon 19 deletion | 39 (18.4) |
Others | 5 (2.4) |
KRAS mutation status | |
Wild type | 194 (91.5) |
Mutation | 18 (8.5) |
Patients who had quit smoking ≥1 year prior to the surgery were defined as former smokers. AIS, adenocarcinoma in situ; MIA, minimally invasive adenocarcinoma; IAC, invasive adenocarcinoma; GGO, ground-glass opacity; p, pure; m, mixed; s, solid; EGFR, epidermal growth factor receptor; KRAS, Kirsten rat sarcoma.