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Neurological Sciences
Published in: Neurological Sciences 12/2019

01-12-2019 | Magnetic Resonance Imaging | Letter to the Editor

Revisiting the diagnostic value of Evans’ index: lessons from an unusual case of normal pressure hydrocephalus with Evans’ index less than 0.3

Authors: Jung E. Park, Hyunjin Ju, Kayeong Im, Kyum-Yil Kwon

Published in: Neurological Sciences | Issue 12/2019

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Excerpt

Idiopathic normal pressure hydrocephalus (iNPH) is a potentially treatable movement disorder and is diagnosed when Evans’ index (EI) is greater than 0.3 [1, 2]. However, the most reliable biomarker of iNPH remains unknown and the diagnosis of iNPH has been regarded to be difficult for this reason. We describe a case of iNPH with EI of less than 0.3 presenting clinically as ventriculoperitoneal (VP) shunt–responsive gait abnormality. …
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Literature
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Relkin N, Marmarou A, Klinge P, Bergsneider M, Black PM (2005) INPH guidelines, part II: diagnosing idiopathic normal-pressure hydrocephalus. Neurosurgery 57:4–16CrossRef
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Mori E, Ishikawa M, Kato T, Kazui H, Miyake H, Miyajima M, Nakajima M, Hashimoto M, Kuriyama N, Tokuda T, Ishii K, Kaijima M, Hirata Y, Saito M, Arai H, Japanese Society of Normal Pressure Hydrocephalus (2012) Guidelines for management of idiopathic normal pressure hydrocephalus: second edition. Neurol Med Chir (Tokyo) 52:775–809CrossRef
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Ling H (2016) Clinical approach to progressive supranuclear palsy. J Mov Disord 9:3–13CrossRef
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Oh M, Kim JS, Kim JY, Shin KH, Park SH, Kim HO, Moon DH, Oh SJ, Chung SJ, Lee CS (2012) Subregional patterns of preferential striatal dopamine transporter loss differ in Parkinson disease, progressive supranuclear palsy, and multiple-system atrophy. J Nucl Med 53:399–406CrossRef
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Toma AK, Holl E, Kitchen KD, Watkins LD (2011) Evans’ index revisited: the need for an alternative in normal pressure hydrocephalus. Neurosurgery 68:939–944CrossRef
Metadata
Title
Revisiting the diagnostic value of Evans’ index: lessons from an unusual case of normal pressure hydrocephalus with Evans’ index less than 0.3
Authors
Jung E. Park
Hyunjin Ju
Kayeong Im
Kyum-Yil Kwon
Publication date
01-12-2019
Publisher
Springer International Publishing
Published in
Neurological Sciences / Issue 12/2019
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-019-03966-5

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