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Free Content What We Should Not Forget about Down Syndrome

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Down syndrome is the foremost common genetic cause of intellectual disability. The additional copy of chromosome 21 confers potential changes in virtually all organ systems, including the brain, neck structures, and spine. Neuroradiologists should be aware of the multitude of imaging findings in patients with Down syndrome to correctly identify and diagnose life-altering conditions associated with this syndrome. In particular, the high prevalence of age-related cognitive decline and dementia stands out more clearly in recent decades due to the notable increase in these individuals' survival. Although the early and timely diagnosis of cognitive decline in patients with varying degrees of intellectual disability has not been an easy task from the clinical point of view, anatomic and functional brain studies have shown an essential role because they allow the early recognition of abnormalities that precede the cognitive decline. Furthermore, the similarities and differences in neuropathologic, genetic, and imaging aspects in patients with Down syndrome have allowed extrapolation for a better understanding of the mechanisms linked to Alzheimer disease development.

Learning Objective: To review and systematize the distinctive characteristics and abnormalities of the head and neck, vertebral column, and CNS present in Down syndrome
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Keywords: AD = Alzheimer disease; APP = amyloid precursor protein; DS = Down syndrome

Document Type: Research Article

Publication date: May 1, 2021

More about this publication?
  • Neurographics is the peer-reviewed, bimonthly educational journal of the American Society of Neuroradiology. The journal comprises articles selected from material presented at the ASNR Annual Meeting. Neurographics also publishes other high-quality submissions that are primarily educational and have a high emphasis on a pictorial approach. Neurographics offers CME credit for reading review articles and completing quiz-based self-assessment activities.

    Visit the ASNR Education Connection to view all available CME courses.

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