Question:
All of the following are neuronal tumours EXCEPT:
All of the following are neuronal tumours EXCEPT:
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Ependymal cells are glial, not neuronal, so their tumour is the odd one out.
Updated On: Jun 24, 2026
- Gangliocytoma
- Ganglioglioma
- Neuroblastoma
- Ependymoma
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The Correct Option is D
Solution and Explanation
Step 1: Understand the question. We must identify which tumour is NOT of neuronal origin.
Step 2: Classify each option. Gangliocytoma is composed of mature ganglion (neuronal) cells, so it is neuronal. Ganglioglioma contains both neoplastic ganglion cells and glial cells, so it has a neuronal component. Neuroblastoma arises from primitive neuroblasts, which are neuronal precursor cells.
Step 3: Examine ependymoma. Ependymoma arises from ependymal cells that line the ventricles and central canal. Ependymal cells are GLIAL cells, so ependymoma is a glioma (glial tumour), not a neuronal tumour.
Step 4: Select the exception. The non-neuronal tumour is ependymoma.
Answer: Ependymoma (option D).
Step 2: Classify each option. Gangliocytoma is composed of mature ganglion (neuronal) cells, so it is neuronal. Ganglioglioma contains both neoplastic ganglion cells and glial cells, so it has a neuronal component. Neuroblastoma arises from primitive neuroblasts, which are neuronal precursor cells.
Step 3: Examine ependymoma. Ependymoma arises from ependymal cells that line the ventricles and central canal. Ependymal cells are GLIAL cells, so ependymoma is a glioma (glial tumour), not a neuronal tumour.
Step 4: Select the exception. The non-neuronal tumour is ependymoma.
Answer: Ependymoma (option D).
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