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Cerebral amyloid angiopathy (CAA) is an age-related small vessel disease pathologically characterized by the progressive accumulation of amyloid-beta (Aβ) peptide in cerebrovascular walls, affecting both cortical and leptomeningeal vessels. Amyloid deposition results in fragile vessels, which may lead to lobar intracerebral hemorrhage (ICH) and cognitive impairment. To evaluate the probability and severity of CAA, the imaging markers depicted on CT and MRI techniques are crucial, as brain pathological examination is highly invasive.

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Background And Objectives: This study aims to report the clinical, biological, and imaging features of cross-sectional study of neurosyphilis patients with leptomeningeal enhancement of spinal cord. Here, 51 neurosyphilis patients with leptomeningeal enhancement of spinal cord positivity are described, offering a promise in terms of early diagnosis, thereby enabling timely detection and treatment.

Methods: We retrospectively included all neurosyphilis patients enrolled in this study from December 2019 to January 2024.

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Pathology of rheumatoid meningitis: A report of 5 cases highlighting the importance of clinical correlation.

Ann Diagn Pathol

February 2025

Department of Pathology, University of Colorado Health Science Center, Anschutz Medical Campus, Aurora, CO, USA; Department of Neurosurgery, University of Colorado Health Science Center, Anschutz Medical Campus, Aurora, CO, USA; Department of Neurology, University of Colorado Health Science Center, Anschutz Medical Campus, Aurora, CO, USA.

Rheumatoid meningitis (RM) presents with sufficiently wide-ranging, but non-specific, symptoms and neuroimaging features of pachy- and/or leptomeningeal thickening that it may be indistinguishable from subacute infectious meningitis. RA diagnosis variably antedates RM and serological confirmation by rheumatoid factor and anti-citrullinated peptide antibodies may not be present preoperatively. Thus, meningeal biopsy may be undertaken.

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In the elderly, cerebral amyloid angiopathy (CAA) is the most common cause for intracranial lobar hemorrhages. CAA is caused by the accumulation of amyloid-β fibrils in cortical and leptomeningeal vessels. In 2022, the Boston Criteria 2.

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Article Synopsis
  • Crystal-storing histiocytosis (CSH) is a rare condition where abnormal protein crystals accumulate in the body, and when it affects the CNS, it can cause persistent imaging abnormalities.* -
  • The study describes one local case of CNS CSH alongside 10 other cases, noting that 9 had brain parenchyma involvement and some cases were linked to conditions like lymphoma.* -
  • While CNS CSH is uncommon, comprehensive evaluation for related malignancies is crucial, and treatment focuses on addressing these underlying conditions.*
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