Acta neurochirurgica
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Acta neurochirurgica · Jan 2000
Review Case ReportsPure acute subdural haematoma without subarachnoid haemorrhage caused by rupture of internal carotid artery aneurysm.
A 52-year-old female presented with disturbance of consciousness and clinical signs of tentorial herniation. Computed tomography showed a pure acute subdural haematoma (SDH) over the left convexity without subarachnoid haemorrhage. Cerebral angiography showed a saccular aneurysm at the junction of the left internal carotid artery and the posterior communicating artery. ⋯ Rupture of an aneurysm adhered to either the dura or falx and located in the subdural space may cause pure SDH. Therefore, ruptured intracranial aneurysm should be considered as a cause of non-traumatic SDH. Immediate removal of the SDH and aneurysmal clipping is recommended in such patients, even those in poor neurological condition.
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Brain stem epidermoid cysts are extremely rare. We describe an unusual case of prepontine epidermoid cyst with a large part of the tumour insinuating itself into the pons. ⋯ Cases reported in the literature either had high mortality/morbidity or were only subtotally removed. Relevant literature is reviewed.