Question:easy
Most common cerebellar tumour in children?
Most common cerebellar tumour in children?
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Cystic pilocytic astrocytoma tops the list in children; metastasis in adults.
Updated On: Jun 24, 2026
- Astrocytoma
- Medulloblastoma
- Ependymoma
- DNET
Show Solution
The Correct Option is A
Solution and Explanation
Step 1: Anchor on two variables: the location is the cerebellum and the patient is a child. Both must be satisfied by the answer.
Step 2: Among the choices, pilocytic astrocytoma is the prototypical childhood cerebellar mass. It presents as a cystic lesion with a mural nodule, grows slowly, and is curable by surgery, which is why it tops the frequency list in this site and age.
Step 3: Sort the distractors by typical location. Medulloblastoma favours the midline vermis and is the most common malignant one, ependymoma loves the fourth ventricle, and DNET sits in the cerebral cortex linked with seizures. These either are not the overall most common cerebellar tumour or are not cerebellar at all.
Step 4: Remember the age contrast: a posterior fossa mass in an adult is most often a metastasis, but in a child it is astrocytoma.
\[\boxed{\text{Astrocytoma}}\]
Step 2: Among the choices, pilocytic astrocytoma is the prototypical childhood cerebellar mass. It presents as a cystic lesion with a mural nodule, grows slowly, and is curable by surgery, which is why it tops the frequency list in this site and age.
Step 3: Sort the distractors by typical location. Medulloblastoma favours the midline vermis and is the most common malignant one, ependymoma loves the fourth ventricle, and DNET sits in the cerebral cortex linked with seizures. These either are not the overall most common cerebellar tumour or are not cerebellar at all.
Step 4: Remember the age contrast: a posterior fossa mass in an adult is most often a metastasis, but in a child it is astrocytoma.
\[\boxed{\text{Astrocytoma}}\]
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