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. 2025 Jan 21;31(1):24-00149. doi: 10.5761/atcs.oa.24-00149

Table 1. Patient clinicopathological characteristics.

Characteristic Total
(n = 110)
EGFRmt group
(n = 51)
EGFRwt group
(n = 59)
p value
Age (years) Median 65 (38–76) 64 (40–76) 66 (38–75) 0.754
Sex Male 50 (45.5%) 16 (31.4%) 34 (57.6%) 0.006
Female 60 (54.6%) 35 (68.6%) 25 (42.4%)
Follow-up (months) Median 56.8 (6.8–164.4) 58.8 (7.7–162.3) 50.8 (6.8–164.4) 0.412
Smoking history No 49 (44.6%) 34 (66.7%) 15 (25.4%) <0.001
Yes 61 (55.5%) 17 (33.3%) 44 (74.6%)
Resection Lobectomy 95 (86.4%) 47 (92.2%) 48 (81.4%) 0.176
Bilobectomy 1 (0.9%) 1 (2.0%) 0 (0%)
Segmentectomy 1 (0.9%) 0 (0%) 1 (1.7%)
Lobectomy with chest wall resection 4 (3.6%) 0 (0%) 4 (6.8%)
Sleeve lobectomy 8 (7.3%) 3 (5.9%) 5 (8.5%)
Pneumonectomy 1 (0.9%) 0 (0%) 1 (1.7%)
Cisplatin cycle 1–2 25 (22.7%) 9 (17.7%) 16 (27.1%) 0.263
3–4 85 (77.3%) 42 (82.4%) 43 (72.9%)
Histology Adenocarcinoma 100 (90.9%) 48 (94.1%) 52 (88.1%) 0.334
Others (adenosquamous cell carcionoma, pleomorphic carcinoma) 10 (9.1%) 3 (5.9%) 7 (11.9%)
pStage I 2 (1.8%) 1 (2.0%) 1 (1.7%) 0.872
IIB 52 (47.3%) 22 (43.1%) 30 (50.9%)
IIIA 46 (41.8%) 23 (45.1%) 23 (39.0%)
IIIB 10 (9.1%) 5 (9.8%) 5 (8.5%)
pT 1 37 (33.6%) 21 (41.2%) 16 (27.1%) 0.005
2 35 (31.8%) 21 (41.2%) 14 (23.7%)
3 30 (27.3%) 8 (15.7%) 22 (37.3%)
4 8 (7.3%) 1 (2.0%) 7 (11.9%)
pN 0 27 (24.6%) 4 (7.8%) 23 (39.0%) <0.001
1 38 (34.6%) 20 (39.2%) 18 (30.5%)
2 45 (40.9%) 27 (52.9%) 18 (30.5%)
Pleural invasion 0 64 (58.2%) 30 (58.8%) 34 (57.6%) 0.041
1 28 (25.5%) 16 (31.4%) 12 (20.3%)
2 7 (6.4%) 4 (7.8%) 3 (5.1%)
3 11 (10.0%) 1 (2.0%) 10 (17.0%)
Lymphatic invasion Absence 80 (72.7%) 37 (72.6%) 43 (72.9%) 0.969
Presence 30 (27.3%) 14 (27.5%) 16 (27.1%)
Vascular invasion Absence 54 (49.1%) 24 (47.1%) 30 (50.9%) 0.692
Presence 56 (50.9%) 27 (52.9%) 29 (49.2%)
Pulmonary metastasis Absence 97 (88.2%) 46 (90.2%) 51 (86.4%) 0.572
Presence 13 (11.8%) 5 (9.8%) 8 (13.6%)
Histological predominance Lepidic 4 (3.6%) 2 (3.9%) 2 (3.4%) <0.001
Acinar 17 (15.5%) 11 (21.6%) 6 (10.2%)
Papillary 40 (36.4%) 26 (51.0%) 14 (23.7%)
Solid 28 (25.5%) 6 (11.8%) 22 (37.3%)
Micropapillary 8 (7.3%) 4 (7.8%) 4 (6.8%)
Others 13 (11.8%) 2 (3.9%) 11 (18.6%)
Micropapillary patterns Absence 40 (36.4%) 9 (17.7%) 31 (52.5%) <0.001
Presence 70 (63.6%) 42 (82.4%) 28 (47.5%)
Solid patterns Absence 48 (43.6%) 25 (49.0%) 23 (39.0%) 0.438
Presence 62 (56.4%) 26 (51.0%) 36 (61.0%)
EGFR mutation Exon 18 2 (3.9%)
Exon 19 30 (58.8%)
Exon 21 19 (37.3%)

EGFR: epidermal growth factor receptor; EGFRmt: EGFR mutation; EGFRwt: EGFR wild type