Neurosurgery (also known as
) is a surgical speciality focusing on the surgical treatment of the brain, spinal cord and the nerves in the spine and extremities. There are many reasons for neurosurgery, including taking a tissue sample (biopsy) of a tumour or removing it, treating bleeding (
) or blood clots (
) resulting from injuries; weaknesses in blood vessels (cerebral aneurysms); abnormal blood vessels; damage to tissues covering the brain; infections;
; pressure in the brain after an injury; and some forms of seizure disorders (e.g.
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