approach preauricular incision scalp extends hairline limb anterior
pterional approaches approach craniotomy incision intracranial anterior aneurysms surgical skin key neupsykey
posterior artery approaches cerebral basilar temporal
approach anterior neurosurgery clival space transtentorial posterior extended upper region aneurysm aneurysms experience circulation cerebral
transcranial skull base approaches visualization area potential schema provided angle fig working neupsykey
fossa clivus interpeduncular extradural neurosurgery tumors combined
approaches lesions brainstem thalamic pineal skull base anterior