Overview
Acute hemorrhagic leukoencephalitis is a severe, often rapidly progressive neurological disorder characterized by hemorrhagic necrosis and demyelination in the white matter of the brain, frequently involving brainstem structures and associated with significant morbidity and mortality 234.Diagnosis
Clinical Presentation: Severe headache, brainstem dysfunction, focal neurological deficits, altered consciousness, fever, and leukocytosis 27.
Imaging: CT shows mass effect, increased attenuation in white matter, and may reveal central enhancement 67.
Pathological Features: Necrotizing vasculitis, fibrinoid changes, neutrophilic infiltrate, perivascular demyelination, and hemorrhage around venous vessels 15.
Biopsy Confirmation: Brain biopsy definitive for diagnosis 45.Management
Surgical Intervention: Evacuation of intracranial hematomas when present 3.
Intracranial Pressure Management: Use of mannitol, hyperventilation to reduce intracranial pressure 4.
Immunosuppressive Therapy: High-dose corticosteroids, plasmapheresis, and cyclophosphamide for prolonged immunosuppression 4.
Monitoring: Continuous intracranial pressure monitoring in intensive care settings 3.Special Populations
Comorbidities: Presence of underlying conditions like mycoplasmal pneumonia or malignancy may influence pathogenesis and management 45.Key Recommendations
Early Imaging: Utilize CT scans for early diagnosis, recognizing characteristic white matter changes indicative of acute hemorrhagic leukoencephalitis (Evidence: Moderate 67).
Aggressive Supportive Care: Implement aggressive management including surgical intervention for hematomas, intracranial pressure reduction, and continuous monitoring in ICU settings (Evidence: Weak 34).
Prophylactic Immunosuppression: Employ prolonged immunosuppressive therapy with high-dose corticosteroids and additional agents like cyclophosphamide to mitigate immune-mediated damage (Evidence: Weak 4).References
1 Berrocal A, Montgomery DL, Pumarola M. Leukoencephalitis and vasculitis with perivascular demyelination in a Weimaraner dog. Veterinary pathology 2000. link
2 Posey K, Alpert JN, Langford LA, Yeakley JW. Acute hemorrhagic leukoencephalitis: a cause of acute brainstem dysfunction. Southern medical journal 1994. link
3 Mastrodimos B, Barnett GH, Awad IA. Intensive care management of acute hemorrhagic leukoencephalitis with favorable neurologic outcome. Cleveland Clinic journal of medicine 1992. link
4 Seales D, Greer M. Acute hemorrhagic leukoencephalitis. A successful recovery. Archives of neurology 1991. link
5 Mitsuyama Y, Fujimoto S, Kohno T. An autopsied case of acute hemorrhagic leukoencephalitis. The Japanese journal of psychiatry and neurology 1986. link
6 Rothstein TL, Shaw CM. Computerized tomography as a diagnostic aid in acute hemorrhagic leukoencephalitis. Annals of neurology 1983. link
7 Valentine AR, Kendall BE, Harding BN. Computed tomography in acute haemorrhagic leukoencephalitis. Neuroradiology 1982. link