Table 3 Pathologic diagnoses
Malignant (n =314) | No. | % |
Adenocarcinoma in situ | 38 | 12.1 |
Minimally invasive adenocarcinoma | 63 | 20.1 |
Invasive adenocarcinoma | Â | Â |
  Lepidic predominant | 33 | 10.5 |
  Acinar predominant | 115 | 36.6 |
  Papillary predominant | 52 | 16.6 |
  Micropapillary predominant | 1 | 0.32 |
  Solid predominant | 2 | 0.64 |
Variants | Â | Â |
  Mucinous adenocarcinoma | 9 | 2.9 |
  Enteric | 1 | 0.32 |
Benign (n =16) | No. | % |
Focal interstitial fibrosis | 5 | 31.3 |
Atypical adenomatous hyperplasia | 4 | 25.0 |
Subpleural fibrosis | 3 | 18.8 |
Respiratory bronchiolitis with fibrosis and lymphocytic infiltration | 1 | 6.3 |
Heavy lymphoplasma cell infiltration | 1 | 6.3 |
Pulmonary lymphomatoid granulomatosis | 1 | 6.3 |
Anthracofibrotic nodule with reactive pneumocytes | 1 | 6.3 |