[Clinicopathologic study of intractable epilepsy-related encephalitis]
1Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.
Summary
Encephalitis is a common cause of intractable epilepsy, often resulting from viral infections. This study analyzed 15 cases, revealing characteristic neuropathologic findings and highlighting encephalitis as a sequel to refractory epilepsy.
Area of Science:
- Neurology
- Pathology
- Infectious Diseases
Background:
- Intractable epilepsy poses significant challenges in patient management.
- Understanding the underlying causes of refractory epilepsy is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the clinicopathologic features of intractable epilepsy associated with encephalitis.
- To identify common causes and histopathological hallmarks of encephalitis-induced refractory epilepsy.
Main Methods:
- Retrospective analysis of clinical and pathological findings in 15 patients with intractable epilepsy post-neurosurgery.
- Review of patient histories, seizure onset, disease duration, and causative factors.
Main Results:
- Nine out of 11 patients with a history had viral encephalitis; temporal lobe involvement was most common (13/15 cases).
- Histopathology revealed perivascular inflammation, cortical atrophy, neuronal loss, glial proliferation, and glial scar formation.
- Cytomegalovirus (CMV) intranuclear inclusions were observed in six cases, with some showing multinucleated giant cells and calcifications.
Conclusions:
- Encephalitis is a significant cause of refractory epilepsy.
- Encephalitis can lead to intractable epilepsy as a long-term consequence.
