Age and location
| Age | Supratentorial | Infratentorial |
|---|---|---|
| 0–2 | choroid plexus papilloma/carcinoma, ATRT, teratoma, desmoplastic infantile tumours | ATRT, medulloblastoma |
| 2–10 | craniopharyngioma, optic glioma, germinoma | pilocytic astrocytoma, medulloblastoma, ependymoma, brainstem (DIPG/diffuse midline) glioma: posterior fossa tumours predominate in children (~60%) |
| Adults | metastases (commonest overall), glioblastoma (commonest primary malignant), lower‑grade gliomas, lymphoma, meningioma (extra‑axial) | metastases (commonest adult posterior fossa mass), haemangioblastoma (commonest primary adult intra‑axial posterior fossa tumour), meningioma, schwannoma |