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Spontaneous posterior fossa hemorrhage associated with low-molecular weight heparin in an adolescent recently diagnosed with posterior reversible encephalopathy syndrome: case report and review of the literature

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Abstract

Background

Posterior reversible encephalopathy syndrome (PRES) constitutes a well-described clinical entity, classically entailing characteristic edematous lesions on imaging studies in a patient with altered mental status, visual disturbances, headache, and seizures. PRES is reversible in the vast majority of cases, although progression to ischemia and hemorrhage has been documented.

Methods

We report a case of a 16-year-old male with chronic renal failure who developed PRES during a hypertensive crisis. The hypertension was successfully managed and PRES-associated symptomatology showed complete regression. However, approximately 2 months later, the patient returned with a spontaneous posterior fossa hemorrhage. Two weeks before this second admission, treatment with low-molecular weight heparin had been initiated. The patient finally succumbed, despite surgical evacuation. The pertinent literature is reviewed.

Conclusion

We suggest that the administration of low-molecular weight heparin in the setting of recent PRES might increase the risk for the development of intracranial hemorrhage.

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Authors and Affiliations

  1. Department of Neurosurgery, Medical Center of Central Georgia, Mercer University School of Medicine, Macon, GA, USA

    Theofilos G. Machinis, Kostas N. Fountas, Vassilios G. Dimopoulos & E. Christopher Troup

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  1. Theofilos G. Machinis
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  2. Kostas N. Fountas
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  3. Vassilios G. Dimopoulos
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  4. E. Christopher Troup
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Correspondence to Kostas N. Fountas.

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Machinis, T.G., Fountas, K.N., Dimopoulos, V.G. et al. Spontaneous posterior fossa hemorrhage associated with low-molecular weight heparin in an adolescent recently diagnosed with posterior reversible encephalopathy syndrome: case report and review of the literature. Childs Nerv Syst 22, 1487–1491 (2006). https://doi.org/10.1007/s00381-006-0155-y

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  • DOI: https://doi.org/10.1007/s00381-006-0155-y

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