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Posttraumatic cerebral hemispheric disconnection syndrome.

A B Rubens, N Geschwind, M W Mahowald

    Archives of Neurology
    |December 1, 1977
    PubMed
    Summary
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    Traumatic brain injury can cause severe damage to the corpus callosum, leading to apraxia and agraphia. Neuropathological findings confirm extensive callosal destruction is possible without prolonged coma.

    Area of Science:

    • Neuropathology
    • Neuroscience
    • Traumatic Brain Injury

    Background:

    • Closed head injuries frequently cause damage to the corpus callosum and adjacent brain areas.
    • Neuropathological examination is crucial for understanding the extent of brain damage after trauma.

    Observation:

    • This case report details the first neuropathological confirmation of extensive corpus callosum destruction in a patient presenting with left-sided apraxia and agraphia.
    • The observed lesions were traumatic in origin, affecting the corpus callosum and surrounding structures.

    Findings:

    • Significant traumatic lesions of the corpus callosum can occur without resulting in prolonged posttraumatic coma, vegetative state, or mortality.
    • The study highlights that such extensive callosal damage may be more prevalent than currently recognized.

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    Implications:

    • Coexisting extracallosal hemispheric lesions may influence the clinical presentation of corpus callosum pathology.
    • Specific functional tests are necessary to detect callosal disconnection phenomena, as symptoms may not be evident in routine behavioral assessments following traumatic brain injury.