Perinzesencephalic subarachnoid haemorrhage represents a distinct clinical and neuroradiological entity in cases of subarachnoid haemorrhages with negative angiography presenting a typical pattern of blood deposition. Although several theories have been proposed, the cause of bleeding remains unknown. Patients with this subarachnoid haemorrhage are in good clinical conditions on admission, have a benign clinical course without complications and neurological deficits due to vasospasasm, rebleeding and/or to, hydrocephalus, and a good outcome at discharge. They have an excellent prognosis at long-term follow-up better than patients with subaracnoid haemorrhage due to ruptured aneurysm. Therapeutic management of these patients should be different from that of patients with ruptured aneurysm and they should not be enrolled in clinical trials aimed at prevention of either rebleeding or vasospasm often advocated but not proven to be necessary. We report a retrospective study, of a series of 64 patients referred over a period of ten years is reported, evaluating the clinical follow-up at long-term and discussing the controversies surrounding aetiology, radiological diagnosis, and the medical management.
|Translated title of the contribution||Perimesencephalic subarachnoid haemorrhage: A distinct clinical and neuroradiological entity in subarachnoid haemorrhage of unknown aetiology|
|Number of pages||13|
|Publication status||Published - 2001|
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