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Chapter 18 - Metal Storage Disorders: Primary Familial Brain Calcification and Movement Disorders

from Section II - A Metabolism-Based Approach to Movement Disorders and Inherited Metabolic Disorders

Published online by Cambridge University Press:  24 September 2020

Darius Ebrahimi-Fakhari
Affiliation:
Harvard Medical School
Phillip L. Pearl
Affiliation:
Harvard Medical School
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Summary

Bilateral calcium deposits are frequently encountered on brain imaging (typically CT scans) or post-mortem examination and may be found in as many as 7% [1] to 20% [2] of investigated individuals. In the majority of cases, calcification is considered physiological, i.e. the result of a normal aging process (with its prevalence almost tripling over 65 years of age) [2], and not clinically relevant [3]. In some instances, the accumulation of calcium may be an associated secondary finding of more than 50 environmental, metabolic, mitochondrial, autoimmune, and sporadic or inherited genetic conditions summarized in recent reviews [4, 5]. Mostly symmetrical bilateral calcifications of the basal ganglia and/or other brain regions, such as the thalamus, brainstem, cerebellum, and cerebral cortex, are occasionally the presentation of a rare group of genetic neurodegenerative disorders, termed primary familial brain calcification (PFBC) disorders. The goal of this chapter is to review and discuss the nomenclature, genetic and molecular mechanisms, and phenotypes of PFBC.

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Movement Disorders and Inherited Metabolic Disorders
Recognition, Understanding, Improving Outcomes
, pp. 244 - 253
Publisher: Cambridge University Press
Print publication year: 2020

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