Abstract
Chronic acquired hepatocerebral degeneration (CAHD) is a rare neurological disorder of cirrhotic patients, characterized by parkinsonism and cognitive impairment. A T1 hyperintensity on the globus pallidum due to an accumulation of manganese (Mn) is found in these patients. The aim of the study was to investigate CAHD, Mn and the MRI pallidal signal in a series of cirrhotic patients. The association between pallidal T1 hyperintensity, CAHD, and blood levels of Mn, the effect of orthotopic liver transplantation (OLT) on the MRI signal and neurological findings, and the role of the pallidal signal as a predictor of CAHD were evaluated. Twenty-six out of 90 patients with cirrhosis had pallidal T1 hyperintensity. Seven patients had CAHD. OLT was followed by the disappearance of CAHD and MRI signal in 2/2 patients. The MRI signal disappeared after OLT in 8/13 patients after a median follow-up time of 24 months. In the patients who did not undergo OLT, CAHD did not present after a median follow-up time of 18 months. The cause of cirrhosis, episodes of acute hepatic encephalopathy and signal intensity were not correlated with CAHD. The blood levels of Mn did not reflect either the MRI signal or CAHD. In conclusion, the pallidal T1 hyperintensity is a prerequisite for the clinical manifestations of CAHD but is not sufficient. The blood levels of Mn as routinely monitored are not a useful marker of Mn burden. The MRI pallidal signal is not a predictor of CAHD.
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The authors thank Mario Coriasco for his technical help.
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Maffeo, E., Montuschi, A., Stura, G. et al. Chronic acquired hepatocerebral degeneration, pallidal T1 MRI hyperintensity and manganese in a series of cirrhotic patients. Neurol Sci 35, 523–530 (2014). https://doi.org/10.1007/s10072-013-1458-x
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DOI: https://doi.org/10.1007/s10072-013-1458-x