A 76-year-old man is admitted to the hospital for evaluation of progressive memory loss and disorientation. The pupils are small but react normally to light. Muscle tone is normal. A lumbar puncture returns clear, colorless CSF under normal pressure. An electroencephalogram shows diffuse slowing. A CT scan of the brain reveals moderate atrophy. Which of the following is the most likely diagnosis?
A 76-year-old man is admitted to the hospital for evaluation of progressive memory loss and disorientation. The pupils are small but react normally to light. Muscle tone is normal. A lumbar puncture returns clear, colorless CSF under normal pressure. An electroencephalogram shows diffuse slowing. A CT scan of the brain reveals moderate atrophy. Which of the following is the most likely diagnosis?
💡 Explanation
A 76-year-old man is admitted to the hospital for evaluation of progressive memory loss and disorientation. The pupils are small but react normally to light. Muscle tone is normal. A lumbar puncture returns clear, colorless CSF under normal pressure. An electroencephalogram shows diffuse slowing. A CT scan of the brain reveals moderate atrophy. Which of the following is the most likely diagnosis?
✓ Correct Answer: A. Alzheimer disease
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