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Choroid plexus papilloma containing bone.

J Cardozo, F Cepeda, M Quintero

    Acta Neuropathologica
    |January 1, 1985
    PubMed
    Summary
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    Bone formation in choroid plexus papillomas is exceptionally rare. This study details a case in an 18-year-old male, reviewing similar instances and potential bone/cartilage development mechanisms in neuroepithelial tumors.

    Area of Science:

    • Neuropathology
    • Surgical Oncology
    • Pediatric Neurosurgery

    Background:

    • Choroid plexus papillomas (CPPs) are rare tumors arising from the choroid plexus epithelium.
    • The presence of osseous metaplasia within CPPs is an exceedingly uncommon finding.
    • Understanding the pathogenesis of heterotopic ossification in CNS neoplasms is crucial.

    Observation:

    • A case of a fourth ventricle choroid plexus papilloma with bone formation is presented in an 18-year-old male.
    • This case is analyzed alongside two previously documented instances of osseous metaplasia in CPPs.
    • Radiological and histological features of the bone within the tumor were examined.

    Findings:

    • The study confirms the rarity of bone formation in choroid plexus papillomas.

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  • Review of literature and the presented case provides insight into the occurrence of osseous metaplasia.
  • Proposed mechanisms for heterotopic bone and cartilage formation in neuroepithelial tumors are discussed.

    • Implications:

    • This case contributes to the limited literature on osseous metaplasia in choroid plexus papillomas.
    • Further research into the cellular and molecular pathways driving heterotopic ossification in brain tumors is warranted.
    • Enhanced understanding may inform diagnostic and therapeutic strategies for rare tumor variants.