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Visualization of Amyloid β Deposits in the Human Brain with Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry
Published on: March 7, 2019
Lobar cerebral hemorrhage from amyloid angiopathy: clinical, neuroimaging, pathologic and outcome correlations
Chuang-Sin Chen1, Yuk-Keung Lo, Sui-Hing Yan
1Division of Neurology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Taiwan.
Insights
Cerebral amyloid angiopathy (CAA) is linked to brain hemorrhages in elderly patients. Despite high rebleeding risks after surgery, these patients showed a surprisingly low mortality rate in this study.
Area of Science:
- Neurology
- Pathology
- Neurosurgery
Background:
- Cerebral amyloid angiopathy (CAA) is a significant cause of lobar intracerebral hemorrhage (ICH) in elderly individuals.
- The Boston Criteria are used for diagnosing CAA, requiring pathological confirmation.
- Recurrent hemorrhage is a common complication following an initial ICH event.
Purpose of the Study:
- To describe outcomes in elderly patients with lobar ICH and CAA who underwent craniotomy for hematoma evacuation and biopsy.
- To review the literature on CAA, ICH, and surgical management.
Main Methods:
- Case series of five elderly patients with lobar ICH and confirmed CAA via biopsy.
- Surgical intervention included craniotomy for hematoma evacuation.
- Pathological examination using Congo-red stain and polarized light to identify cerebral amyloid deposition.
Main Results:
- All five patients were diagnosed with cerebral amyloid angiopathy.
- Despite the severity of ICH and surgical intervention, the observed mortality rate was relatively low.
- Patients with CAA demonstrated a high risk of recurrent hemorrhage post-surgery.
Conclusions:
- Craniotomy with hematoma evacuation can be considered in select elderly patients with lobar ICH and CAA.
- While rebleeding risk is elevated, surgical intervention may be associated with favorable survival outcomes.
- Further research is warranted to optimize management strategies for ICH secondary to CAA.
Abstract:
Cerebral amyloid angiopathy (CAA) contributes to sporadic lobar intracerebral hemorrhage in older patients, especially those who are more than 70 years old. In clinical practice, a diagnosis of CAA refers to the Boston Criteria, which requires that "definitive" cases be confirmed by pathologic evidence at autopsy. A "Probable" case, means that there is clinical support and that pathologic evidence is available by biopsy from the craniotomy for patients with severe lobar intracerebral hemorrhage. Cerebral amyloid that is deposited in cortical vessels is revealed by apple-green birefringence under polarized light using Congo-red stain. Rebleeding after a first primary intracerebral hemorrhage is common. This paper describes five cases of aged patients with lobar cerebral hemorrhage and craniotomy with hematoma evacuation and biopsy. Pathological results all showed amyloid angiopathy. Various outcomes are discussed, and the literature is reviewed. Findings show that although patients with CAA were at high risk of recurrent hemorrhage after surgery, the mortality rate was relatively low despite the severity of lobar intracerebral hemorrhage.
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