Abstract
Background An 80-year-old man with a 60 pack-year smoking habit, hypertension, and hypercholesterolemia presented to a movement disorders clinic with a 30-month history of step-wise progression of gait, balance, and memory impairment. He had experienced multiple falls and two hospitalizations for sudden-onset freezing of gait.
Investigations Neurological examination, brain MRI, neuropsychological evaluation, gait analysis, continuous external lumbar drainage of cerebrospinal fluid, and post-mortem neuropathological studies.
Diagnosis Vascular parkinsonism was diagnosed on the basis of the patient's history and imaging findings; however, post-mortem neuropathology was consistent with a diagnosis of normal pressure hydrocephalus and did not support that of vascular parkinsonism.
Treatment Ventriculoperitoneal shunt placement superseded tighter control of vascular risk factors, as judged by the patient's response to continuous lumbar drainage.
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Acknowledgements
The authors thank Martha Headworth, medical illustrator, and Mary Kemper, medical editor, of The Neuroscience Institute, University of Cincinnati, OH, for their expertise in organizing the figures and providing editorial review of this manuscript, respectively.
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Supplementary information
Supplementary Video
Video clip of patient demonstrating markedly improved straight gait and turning following 3-day continuous external lumbar drainage (ELD). Segment 1: straight gait before and after ELD. Segment 2: turning, also before and after ELD. Gait parameters are displayed. (MPG 11286 kb)
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Espay, A., Narayan, R., Duker, A. et al. Lower-body parkinsonism: reconsidering the threshold for external lumbar drainage. Nat Rev Neurol 4, 50–55 (2008). https://doi.org/10.1038/ncpneuro0688
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DOI: https://doi.org/10.1038/ncpneuro0688
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