Most common site of spinal tumour
- Extramedullary intradural
- Extra dural
- Intra medullary
- Extra medullary extradural
The Correct option is D
Explanation with High Yield Facts:
Spinal cord tumours- Epidural metastatic tumours are the most common.
- Most common - neoplastic cord compression is nearly always due to extra-medullary, extradural metastases usually from breast, lung, prostate, lymphoma or renal cancers.
- Compression usually occurs by posterior expansion of vertebral metastases or extension of Para spinal metastases through the intervertebral foramina.
- These result in demyelination, arterial compromise, venous occlusion and vasogenic oedema of the spinal cord, all contributing to myelopathy. 70 % occur in the thoracic spine, 20 % lumbar spine and 10 % cervical spine.
- Ependymomas are the most common primary spinal tumour, accounting for about 66 % of all intramedullary tumours. They are usually located around the lower cord, conus medullaris and filum terminale.
- Spinal astrocytoma are the second most common primary spinal tumour, accounting for about 30 % of all intramedullary tumours
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