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Computed tomography in cerebrotendinous xanthomatosis
Neurology
|November 1, 1981
Summary
Cerebrotendinous xanthomatosis (CTX) causes brain white matter changes due to sterol buildup, leading to metabolic encephalopathy. Neurologic symptoms in CTX patients stem from this metabolic issue, not permanent brain damage.
Area of Science:
- Neurology
- Radiology
- Metabolic Disorders
Background:
- Cerebrotendinous xanthomatosis (CTX) is a rare genetic disorder.
- CTX is characterized by abnormal accumulation of sterols in tissues.
- Neurological manifestations are common in CTX patients.
Purpose of the Study:
- To investigate the neuroimaging findings in patients with cerebrotendinous xanthomatosis.
- To correlate imaging findings with the underlying pathophysiology of neurological symptoms in CTX.
Main Methods:
- Computed tomography (CT) scans of the brain were analyzed in nine patients diagnosed with CTX.
- Radiological findings were interpreted in the context of sterol metabolism and demyelination.
Main Results:
- CT scans revealed diffuse white matter hypodensity above and below the tentorium in all nine patients.
- This hypodensity was attributed to sterol infiltration and secondary demyelination.
- One patient presented with a focal cerebellar hypodense lesion, indicative of a true xanthoma.
Conclusions:
- The observed white matter changes in CTX are primarily due to metabolic encephalopathy caused by sterol infiltration.
- Neurological symptoms in CTX, regardless of duration, are likely reversible and related to metabolic dysfunction rather than irreversible tissue destruction by xanthomas.