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[Perimesencephalic hemorrhage]
P Canhão1, A N Pinto, T Pinho e Melo
1Serviço de Neurologia, Neurocirurgia e Radiologia, Hospital Santa Maria, Lisboa.
Acta Medica Portuguesa
|October 1, 1992
Summary
Perimesencephalic hemorrhage, a type of subarachnoid hemorrhage, typically presents with sudden headache and benign outcomes. Patients with normal initial cerebral angiography may not require repeat imaging, simplifying diagnosis and management.
Area of Science:
- Neurology
- Neurosurgery
- Radiology
Context:
- Subarachnoid hemorrhage (SAH) diagnosis and management.
- Evaluation of patients with normal cerebral angiography.
- Characterization of perimesencephalic hemorrhage (PMH).
Purpose:
- To identify patients with perimesencephalic hemorrhage (PMH) among those with subarachnoid hemorrhage (SAH).
- To describe the clinical presentation and radiological findings of PMH.
- To assess the outcomes and need for repeat angiography in PMH.
Summary:
- Out of 293 SAH patients, 108 had normal cerebral angiography.
- Twenty-three patients met radiological criteria for PMH.
- PMH patients presented with severe headache, meningeal signs, and no focal deficits or decreased alertness.
- The evolution was benign with no mortality, morbidity, or rebleeds over 3.5 years.
Impact:
- Suggests that repeat angiography may not be necessary for subarachnoid hemorrhage patients with normal initial findings suggestive of PMH.
- Highlights the benign nature and favorable prognosis of perimesencephalic hemorrhage.
- Aids in streamlining diagnostic pathways for specific SAH subtypes.