Korean J Pathol.
1999 Sep;33(9):741-744.
Cerebral Amyloid Angiopathy: A report of two cases
- Affiliations
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- 1Department of Pathology, Seoul National University College of Medicine, Seoul 110-744, Korea.
- 2Department of Diagnostic Pathology, Samsung Medical Center, Sungkyunkwan University College of Medicine.
Abstract
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Cerebral amyloid angiopathy (C.A.A) is characterized by the extracellular amyloid
protein deposition in the vessel walls of the brain and meninges. It has been estimated
to account for 5 to 10% of all primary, nontraumatic brain hemorrhage. We report two
cases of C.A.A causing nontraumatic intracerebral hemorrhage in the frontal lobe. The
first case was a 60-year-old female who was admitted for the left hemiplegia and
dysarthralgia. Brain CT revealed right frontal lobe hemorrhage. The second case was a
72-year-old male who was admitted for amnesia and gait disturbance. Clinical
impression was Alzheimer's disease. Brain MRI revealed multifocal small hemorrhage in
the right frontal lobe. Microscopically, both cases showed dilated small arteries of
superficial cortex and meninges with hyalinization. Some vessels showed microaneurysm
and fibriniod necrosis. Congo-red stain also exhibited birefringence under polarized light.
There was no evidence of Alzheimer's disease.