Table 1.
Typical features of several uncommon lung tumours
| Hamar- | Carci- | Tracheo- | Lipoma | Papillo- | Solitary | Primary | Sclerosing | Kaposi’s | Leiomyoma/ | Angio- | Epithelioid | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| toma | noid | bronchial | matosis | papilloma | pulmonary | haeman- | sarcoma | myosarcoma, | sarcoma | haemangio- | ||
| gland | lymphoma | gioma | spindle cell | endothelioma | ||||||||
| carcinoma | sarcomas | |||||||||||
| Size (cm) | 4 | 1–3 | v | 1–7 | 1–2 | 0.5–1.2 | 2–8 | 1–5 | v | 1–24 | 1–2 | 0.3–3 |
| Nodule/mass | +++ | +++ | +++ | +++ | +++ | +++ | ++ | +++ | ++ | +++ | +++ | +++ |
| Air space | ||||||||||||
| involvement | — | — | — | — | — | — | ++ | — | + | — | — | + |
| Interstitial | ||||||||||||
| involvement | — | — | — | — | — | — | ++ | — | + | — | — | — |
| Solitary | ++ | +++ | +++ | +++ | — | +++ | ++ | +++ | +++ | ++ | — | |
| Multiple | (+) | — | — | — | +++ | — | ++ | — | ++ | + | + | +++ |
| + | ||||||||||||
| Tracheal | (+) | — | (+) | ++ | (+) | (+) | — | (+) | + | + | — | |
| Bronchial | (+) | ++ | — | +++ | ++ | +++ | (+) | — | (+) | + | ++ | ++ |
| Parenchymal | +++ | + | ++ | (+) | + | — | +++ | +++ | ++ | +++ | +++ | ++ |
| + | ||||||||||||
| Fat | ++ | — | — | ++ | — | — | — | — | — | — | — | — |
| Calcification | ++ | — | + | — | — | — | ++ | — | + | + | + | |
— = not a feature; (+) = exceptionally documented; + = uncommon; ++ = common; +++ = typical; v = variable.