Unless otherwise indicated, all statements apply to both small cell and non-small cell lung cancer.
| Spread | Primary Site/Mets |
| Lymphatic Spread | Cervical lymph nodes, contralateral lung and contralateral mediastinum. |
| Hematogenous Spread | Brain, bone, liver, adrenal glands, kidney, contralateral lung. |
Key words/possible involvement: Terms which indicate possible involvement by tumor. Common terms are provided, but the list is not all-inclusive.
Other words/no involvement: other terms seen in reports which indicate an abnormality but do not indicate a neoplastic process. Common terms are provided, but the list is not all-inclusive.
Key information: information to look for in the report of the study. Key information helps define the extent of disease.