Table 3.
Histological findings
| Air bronchogram | GGO | |||||
|---|---|---|---|---|---|---|
| Finding | AB type | Non‐AB type | P | GGO type | Non‐GGO type | P |
| SCC | ||||||
| Negative | 11 | 18 | 0.095 | 5 | 24 | 0.561 |
| Positive | 1 | 5 | 0 | 6 | ||
| AD | ||||||
| Negative | 0 | 6 | 0.074 | 0 | 6 | 0.561 |
| Positive | 12 | 17 | 5 | 24 | ||
| Percentage of AD | ||||||
| ≤ 50% | 3 | 14 | 0.006 | 2 | 15 | 0.622 |
| > 50% | 9 | 3 | 3 | 9 | ||
| Papillary AD | ||||||
| Negative | 1 | 8 | 0.043 | 1 | 8 | 1.0 |
| Positive | 11 | 9 | 4 | 16 | ||
| Acinar AD | ||||||
| Negative | 10 | 10 | 0.234 | 4 | 16 | 1.0 |
| Positive | 2 | 7 | 1 | 8 | ||
| Lepidic AD | ||||||
| Negative | 3 | 16 | < 0.001 | 0 | 19 | 0.002 |
| Positive | 9 | 1 | 5 | 5 | ||
| Percentage of SC | ||||||
| ≤ 50% | 11 | 14 | 0.113 | 4 | 21 | 0.553 |
| > 50% | 1 | 9 | 1 | 9 | ||
| Spindle cells | ||||||
| Negative | 1 | 8 | 0.095 | 0 | 9 | 0.203 |
| Positive | 11 | 15 | 5 | 21 | ||
| Giant cells | ||||||
| Negative | 6 | 6 | 0.149 | 4 | 8 | 0.038 |
| Positive | 6 | 17 | 1 | 22 | ||
| Necrosis | ||||||
| Negative | 8 | 4 | 0.024 | 4 | 13 | 0.177 |
| Positive | 4 | 19 | 1 | 17 | ||
| Percentage of necrosis | ||||||
| ≤ 25% | 12 | 17 | 0.074 | 5 | 24 | 0.561 |
| > 25% | 0 | 6 | 0 | 6 | ||
| EGFR mutation | ||||||
| Negative | 11 | 20 | 4 | 27 | ||
| Positive | 0 | 1 | 0 | 1 | ||
AB, air bronchogram; AD, adenocarcinoma; GGO, ground glass opacity; SC, sarcomatoid component; SCC, squamous cell carcinoma.