Table 1.
Subtype | Size and Invasion | Lepidic Pattern Distribution |
Lymphatic Invasion |
Vascular Invasion |
Pleural Invasion |
Tumor Necrosis |
---|---|---|---|---|---|---|
Adenocarcinoma in situ | ≤3 cm and no invasion | 100% | Absent | Absent | Absent | Absent |
Minimally invasive adenocarcinoma | ≤3 cm and ≤5 mm invasion | Predominant | Absent | Absent | Absent | Absent |
Lepidic predominant invasive adenocarcinoma | >3 cm and/or >5 mm invasion | Predominant | Absent or present | Absent or present | Absent or present | Absent or present |