J Korean Neurol Assoc.
2015 May;33(2):106-109. 10.17340/jkna.2015.2.7.
Cerebrospinal Fluid Tap Test in Idiopathic Hydrocephalus Patient with an Evans' Index Less Than 0.3
- Affiliations
-
- 1Department of Neurology, Kyungpook National University School of Medicine, Daegu, Korea. kangkh@knu.ac.kr
- 2Brain Science & Engineering Institute, Kyungpook National University, Daegu, Korea.
- 3Department of Neurosurgery, Kyungpook National University School of Medicine, Daegu, Korea.
- KMID: 2184646
- DOI: http://doi.org/10.17340/jkna.2015.2.7
Abstract
- A 73-year-old man presented with progressive gait impairment. He exhibited slow, shuffling, and unstable gait. A formal neuropsychological evaluation revealed memory deficits with frontal dysfunction. Brain MRI revealed communicating hydrocephalus with an Evans' index of 0.27. After cerebrospinal fluid (CSF) removal by lumbar puncture, the patient exhibited a marked improvement in gait. A CSF tap test after careful clinical examination may need to be considered in the diagnosis of idiopathic hydrocephalus with an Evans' index of <0.3.
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