Classification system based on the cells of origin of multiple synchronous lung nodules
| Lymphoproliferative disorders |
| MALT lymphoma |
| Lymphomatoid granulomatosis |
| Post-transplant lymphoproliferative disorder |
| Diffuse large B-cell lymphoma |
| Vascular tumours |
| Epithelioid haemangioendothelioma |
| Kaposi's sarcoma |
| Angiosarcoma |
| Neuroendocrine cell line |
| Diffuse idiopathic neuroendocrine cell hyperplasia |
| Meningothelial cell line |
| Minute pulmonary meningothelial-like nodules |
| Epithelial cell line |
| Atypical adenomatous hyperplasia |
| Adenocarcinoma in situ |
MALT: mucosa-associated lymphoid tissue.