Knight's move thinking? Mild cognitive impairment in a chess player
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The 4 Mountains Test: A Short Test of Spatial Memory with High Sensitivity for the Diagnosis of Pre-dementia Alzheimer's Disease
Published on: October 13, 2016
H A Archer1, J M Schott, J Barnes
1The Dementia Research Centre, The National Hospital for Neurology and Neurosurgery, London, UK.
Abstract:
We report the case of a chess player with superior premorbid cognitive function who presented to the Cognitive Disorders clinic at the National Hospital for Neurology and Neurosurgery with a 2-year history of symptoms of possible memory loss. Initially the MRI scan appearance was within normal limits and his cognitive scores inside the normal range; subsequently his cognitive function deteriorated and he fulfilled criteria for Mild Cognitive Impairment (MCI) two years later. Unexpectedly he died of an unrelated illness seven months later and post mortem examination of the brain was carried out, revealing advanced Alzheimer's disease (CERAD definite and NIA-Regan Institute high likelihood). This case highlights the difficulties encountered in assessing patients with superior premorbid function in the early stages of Alzheimer's disease, and reveals the value of serial MRI and neuropsychological assessment in detecting and monitoring early neurodegenerative disease.
Insights
Early Alzheimer's disease (AD) is challenging to diagnose in individuals with high cognitive function. Serial MRI and neuropsychological tests are crucial for detecting neurodegeneration in these complex cases.
Area of Science:
- Neuroscience
- Neurology
- Geriatrics
Background:
- Assessing early neurodegenerative diseases like Alzheimer's disease (AD) can be difficult in individuals with superior premorbid cognitive function.
- Standard diagnostic tools may not immediately detect cognitive decline in highly intelligent individuals.
Observation:
- A chess player with high cognitive function presented with memory loss symptoms.
- Initial MRI scans and cognitive tests were normal, but cognitive function later declined, meeting criteria for Mild Cognitive Impairment (MCI).
Findings:
- Post-mortem examination revealed advanced Alzheimer's disease (CERAD definite, NIA-Regan high likelihood).
- This case underscores the diagnostic challenges in early AD for high-functioning individuals.
Implications:
- Serial Magnetic Resonance Imaging (MRI) and neuropsychological assessments are valuable for early detection and monitoring of neurodegenerative diseases.
- Recognizing the impact of superior premorbid function is essential for accurate diagnosis and management of Alzheimer's disease.
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