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Related Experiment Videos

Cysts of the third ventricle.

R Schröder1, P Sanker, F Thun

  • 1Department of Pathology, University of Cologne.

Zentralblatt Fur Neurochirurgie
|January 1, 1990
PubMed
Summary

Immunohistochemistry helps classify third ventricle cysts, distinguishing colloid cysts of presumed bronchogenic origin from other rare lesions like diverticula and meningeal glioependymal cysts.

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Area of Science:

  • Neuroscience
  • Pathology
  • Histology

Background:

  • Third ventricle cysts are often congenital and classified as ependymal or neuroepithelial cysts.
  • Histogenetic classification is challenging due to overlapping structural details.
  • Immunohistochemistry offers a potential method for differentiation.

Observation:

  • Antibodies to cytokeratins (KL 1), epithelial membrane antigen (EMA), S 100 protein (S 100), and glial fibrillary acidic protein (GFAP) were used.
  • Fourteen colloid cysts demonstrated distinct epithelial reactions compared to neuroepithelium.
  • Two other "ependymal cysts" were identified as diverticula and meningeal glioependymal cysts.

Findings:

  • Immunohistochemistry confirmed distinct epithelial differences in colloid cysts, supporting a presumed bronchogenic origin.
  • This technique enabled accurate classification of heterogeneous third ventricle cyst subtypes.
  • The study differentiated colloid cysts from other rare cystic lesions in the third ventricle.

Implications:

  • Immunohistochemistry provides a valuable tool for accurate histogenetic classification of third ventricle cysts.
  • Clarifying the origin of colloid cysts has implications for understanding their pathogenesis.
  • Improved classification aids in understanding the clinical and neuroradiological aspects of these rare lesions.

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