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October 2002: 27-year-old female with epilepsy
Zissimos Mourelatos1, Michael McGarvey, Jacqueline A French
1Division of Neuropathology, Department of Pathology, University of Pennsylvania Medical Center, Philadelphia, USA.
Brain Pathology (Zurich, Switzerland)
|May 15, 2003
Summary
Rasmussen's encephalitis is a rare neurological disorder causing progressive brain hemisphere atrophy and seizures. Diagnosis involves brain imaging and microscopic examination, with hemispherectomy as a potential treatment.
Area of Science:
- Neurology
- Neuroscience
- Pathology
Background:
- Rasmussen's encephalitis is a chronic, progressive neurological disorder characterized by inflammation and atrophy of one cerebral hemisphere.
- First described in 1958, it typically affects children and young adults, leading to severe neurological deficits and intractable epilepsy.
Observation:
- A 27-year-old woman with a history of partial complex seizures experienced worsening symptoms and neuroimaging revealed right cerebral and left cerebellar atrophy.
- Despite planned surgical intervention, the patient unfortunately expired. Post-mortem examination confirmed hemi-atrophy and revealed microscopic findings of severe gliosis and perivascular lymphocytic infiltrates.
Findings:
- Microscopic examination of the brain demonstrated chronic encephalitis, neuronophagia, microglial activation, and lymphocytic infiltrates, consistent with Rasmussen's encephalitis.
- The pathological findings indicate a process of neuronal loss and gliosis, particularly in the affected hemisphere.
Implications:
- The etiology of Rasmussen's encephalitis remains unknown, with viral infections and autoimmune mechanisms being investigated.
- Early diagnosis and intervention, potentially including hemispherectomy, are crucial for managing this debilitating condition and improving patient outcomes.