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amnesic-dysnomic aphasia (anomic aphasia)
Etiology:
1) tumor
2) Alzheimer's disease
3) infarction in the distribution of the posterior cerebral artery
4) Herpes simplex encephalitis
Pathology:
-> deep temporal lobe lesions involving parahippocampal &/or hippocampal gyrus
Clinical manifestations:
1) inability to recall names of objects or parts of objects
2) difficulty in recent memory
3) associated manifestations
a) apraxia
b) dementia
c) no sensory abnormalities
d) upper quadrantic visual field defect
4) fluency: normal
5) auditory comprehension: relatively normal
6) repetition: normal
7) reading comprehension: normal or abnormal
8) writing: normal or abnormal
General
aphasia
References
- Harrison's Principles of Internal Medicine, 13th ed.
Isselbacher et al (eds), McGraw-Hill Inc. NY, 1994, pg 158-161
- Comprehensive Geriatric Assessment, Osterweil et al eds,
McGraw Hill, New York, 2000, pg 75