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Related Experiment Videos

Meningio-angiomatosis.

W Paulus1, J Peiffer, W Roggendorf

  • 1Institute of Brain Research, University of Tübingen, F.R.G.

Pathology, Research and Practice
|April 1, 1989
PubMed
Summary

A rare brain disorder, meningio-angiomatosis, was observed in a young boy with unique features. This case provides new insights into the cellular origins of this benign condition.

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[Comment].

Zeitschrift fur Gastroenterologie·2015

Area of Science:

  • Neuropathology
  • Developmental Neurobiology
  • Histopathology

Background:

  • Meningio-angiomatosis is a rare, generally benign disorder involving meningothelial proliferations and vascular abnormalities in the brain.
  • Previous cases typically present with leptomeningeal calcification, and the youngest reported age at diagnosis is higher than in this case.

Observation:

  • A five-year-old boy with a history of left-sided muscular weakness and absence seizures presented with fatal valproate-induced hepatic insufficiency.
  • Autopsy revealed meningio-angiomatosis with atypical features: absence of leptomeningeal calcification and presence of intracortical 'free fibroblasts'.

Findings:

  • Immunohistochemical analysis showed perivascular cells negative for common markers (S100, GFAP, desmin, factor-8-related antigen) and embedded in specific collagen types (III, VI, procollagen I).
  • 'Free fibroblasts' were surrounded by basement membrane collagen type IV.
  • These findings support a meningothelial origin for both perivascular cells and 'free fibroblasts'.

Implications:

  • This case expands the pathological spectrum of meningio-angiomatosis, particularly in younger patients.
  • The cellular origin of the proliferative elements in meningio-angiomatosis is further elucidated, suggesting a common meningothelial lineage.
  • Understanding these cellular origins is crucial for future diagnostic and potentially therapeutic strategies for this rare condition.

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