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  • Title: Bilaterally symmetric cervical spondylotic amyotrophy: a novel presentation and review of the literature.
    Author: Gebere-Michael SG, Johnston JC, Metaferia GZ, Wuhib MZ, Fernandez HH.
    Journal: J Neurol Sci; 2010 Mar 15; 290(1-2):142-5. PubMed ID: 20045121.
    Abstract:
    BACKGROUND: Cervical spondylotic amyotrophy (CSA) is considered a syndrome of (1) unilateral upper extremity weakness and atrophy, (2) affecting either the proximal or distal musculature, (3) without sensory impairment or lower extremity dysfunction. AIMS OF STUDY: The authors report a novel case of bilaterally symmetric CSA with blurring of the proximal-distal distinction, discuss the pathophysiology, and review the literature. METHODS: A 45 year old man presented with a several year history of insidiously progressive bilaterally symmetric upper extremity weakness and wasting, profound in the proximal musculature and moderate to severe in the distal muscle groups. RESULTS: Based on the clinical, neuroimaging and electrodiagnostic features, this patient harbors a more severe phenotype of the classical syndrome. CONCLUSION: The authors propose expanding the generally accepted definition of CSA to include this bilaterally symmetric form of disease, thereby minimizing diagnostic error or delay. Additionally, based on this case and a review of the literature, adherence to the proximal-distal distinction should be avoided since it is commonly blurred. Accurate diagnosis is crucial since this presentation mimics the motor neuron disease variant Vulpian-Bernhardt syndrome. The importance of early diagnosis is underscored by reports of significant improvement with timely surgical decompression.
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