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Magnetic resonance imaging in central pontine myelinolysis
P D Thompson1, D Miller, R F Gledhill
1University Department of Neurology King's College Hospital Medical School, London, UK.
Abstract:
Magnetic resonance imaging (MRI) was performed in two patients in whom a clinical diagnosis of central pontine myelinolysis (CPM) had been made. MRI showed lesions in the pons in both cases about 2 years after the illness, at a time when the spastic quadriparesis and pseudobulbar palsy had recovered. The persisting abnormal signals in CPM are likely to be due to fibrillary gliosis. Persistence of lesions on MRI means that the diagnosis of CPM may be electively, after the acute illness has resolved.
Insights
Magnetic resonance imaging (MRI) can detect central pontine myelinolysis (CPM) lesions years after recovery. These persistent MRI signals in CPM indicate gliosis, allowing for diagnosis after the acute illness resolves.
Area of Science:
- Neuroimaging
- Neurology
- Pathology
Background:
- Central pontine myelinolysis (CPM) is a neurological condition characterized by demyelination in the pons.
- Clinical diagnosis of CPM is often based on neurological deficits such as spastic quadriparesis and pseudobulbar palsy.
Observation:
- Two patients with a clinical diagnosis of CPM underwent Magnetic Resonance Imaging (MRI).
- MRI scans were performed approximately two years after the initial illness onset.
Findings:
- Lesions in the pons were identified on MRI in both patients.
- Neurological symptoms, including spastic quadriparesis and pseudobulbar palsy, had resolved by the time of imaging.
- Persistent abnormal MRI signals in CPM are attributed to fibrillary gliosis.
Implications:
- The persistence of lesions on MRI suggests that a diagnosis of CPM can be confirmed electively after the acute phase of the illness has subsided.
- Long-term MRI monitoring can aid in understanding the chronic changes associated with CPM.
- Fibrillary gliosis is a key pathological finding in the resolution phase of CPM, detectable via MRI.