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[A case of chronic herpes encephalitis with myelodysplastic syndrome (MDS)]
Abstract:
A 72-year-old male suffering with MDS was admitted to our hospital because of slowly progressive dementia, convulsions and consciousness disturbance. A CT scan of the brain showed a low density area in the right temporal to parietal lobe and T2-weighted MRI of the brain revealed a high intensity signal in the same area. Herpes simplex virus DNA was detected in CSF by PCR method. He was diagnosed as having herpes simplex encephalitis but his clinical course was prolonged and considered atypical as herpetic infection in CNS. However, after administration of aciclovir, progression of his symptoms stopped, and a CT scan still revealed abnormal findings with the same area after more than four months. We thought his chronic course of herpes encephalitis was caused by incomplete immune function suppressed by MDS.
Insights
A 72-year-old male with myelodysplastic syndromes (MDS) experienced prolonged herpes simplex encephalitis. His condition improved with aciclovir, suggesting MDS-related immune suppression contributed to the atypical presentation.
Area of Science:
- Neurology
- Infectious Diseases
- Hematology
Background:
- Myelodysplastic syndromes (MDS) can impair immune function.
- Herpes simplex virus (HSV) typically causes acute central nervous system (CNS) infections.
Observation:
- A 72-year-old male with MDS presented with progressive dementia, convulsions, and altered consciousness.
- Brain imaging revealed abnormalities in the right temporal-parietal lobe.
- Herpes simplex virus DNA was detected in cerebrospinal fluid (CSF).
Findings:
- The patient was diagnosed with herpes simplex encephalitis, but the clinical course was prolonged and atypical.
- Aciclovir treatment halted symptom progression.
- Brain imaging showed persistent abnormalities for over four months.
Implications:
- MDS-related immune compromise may lead to chronic or atypical herpes simplex encephalitis.
- This case highlights the importance of considering underlying immune deficiencies in prolonged CNS infections.
- Further research is needed to understand the interaction between MDS and CNS viral infections.
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