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Intracerebral arachnoidal cyst containing choroid plexus. Case report

J R Iglesias, L Sanjuanbenito, J Martinez-Cubells

    Acta Neurochirurgica
    |January 1, 1981
    PubMed
    Summary

    This report details a rare intracerebral arachnoidal cyst containing choroid plexus. The cyst acted as an expansive intracranial mass, with no initial communication to surrounding spaces.

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    Area of Science:

    • Neurosurgery
    • Neuropathology
    • Cerebrovascular Research

    Background:

    • Arachnoidal cysts are typically benign lesions found in the subarachnoid space.
    • Intracerebral arachnoidal cysts are rare, and their origin and behavior can be atypical.
    • Choroid plexus is normally found within the ventricular system, responsible for cerebrospinal fluid production.

    Observation:

    • A unique case of an intracerebral arachnoidal cyst in the left fronto-parietal region was identified.
    • Surgical exploration revealed no communication between the cyst and the ventricular system or subarachnoid space.
    • The cyst was found to contain genuine choroid plexus tissue.

    Findings:

    • The intracerebral arachnoidal cyst exhibited characteristics of an expansive intracranial mass.

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  • The presence of choroid plexus within the cyst suggests an unusual developmental origin or sequestration.
  • The lack of communication with normal cerebrospinal fluid spaces highlights its isolated nature.

    • Implications:

    • This case expands the understanding of the diverse presentations and origins of arachnoidal cysts.
    • It underscores the importance of thorough intraoperative assessment for definitive diagnosis and management.
    • Further research into the embryogenesis of such atypical cysts may provide insights into brain development.