Clinical Report: Prevalence and Distribution of Immune-Mediated Causes of Hypertrophic Pachymeningitis in São Paulo, Brazil
Overview
This study estimates the prevalence and describes the etiological distribution of immune-mediated hypertrophic pachymeningitis (HP) in São Paulo, Brazil.
Background
Hypertrophic pachymeningitis is a rare inflammatory disorder that can lead to significant neurological symptoms due to cranial nerve compression. Limited data exist on HP in Latin America, necessitating this study to fill knowledge gaps.
Data Highlights
No numerical data or trial data provided in the source material.
Key Findings
HP may represent the initial manifestation of systemic diseases, particularly immune-mediated conditions.
The study aims to estimate HP prevalence in São Paulo, hypothesizing it is not extremely rare in Brazil.
Etiological diagnoses were based on clinical, imaging, laboratory, and histopathological findings.
Patients were classified into five groups: idiopathic, IgG4-related disease, neurosarcoidosis, ANCA-related pachymeningitis, and other causes.
IgG4-related disease was defined according to the 2019 ACR/EULAR classification criteria.
Clinical Implications
Clinicians should consider immune-mediated conditions as potential causes of hypertrophic pachymeningitis, especially in patients presenting with neurological symptoms. A comprehensive diagnostic evaluation, including autoimmune screening and imaging, is essential for accurate diagnosis and management.
Conclusion
This study provides valuable insights into the prevalence and causes of immune-mediated hypertrophic pachymeningitis in Brazil, highlighting the need for awareness and further research in this area.
