[Perimesencephalic subarachnoid hemorrhage]
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I A Hynås1, E Kerty, R Nyberg-Hansen
1Nevrologisk avdeling, Rikshospitalet, Oslo.
Acute, non-traumatic subarachnoid haemorrhage is usually caused by a ruptured aneurysm. This is a serious condition involving high mortality. Perimesencephalic haemorrhage has recently been identified as a clinical subset of subarachnoid haemorrhage. A pattern of haemorrhage predominantly limited to perimesencephalic cisterns on CT is highly predictive of a normal angiogram, and is connected with an excellent prognosis. We describe two patients with perimesencephalic haemorrhage.
Acute, non-traumatic subarachnoid haemorrhage is usually caused by a ruptured aneurysm. This is a serious condition involving high mortality. Perimesencephalic haemorrhage has recently been identified as a clinical subset of subarachnoid haemorrhage. A pattern of haemorrhage predominantly limited to perimesencephalic cisterns on CT is highly predictive of a normal angiogram, and is connected with an excellent prognosis. We describe two patients with perimesencephalic haemorrhage.