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  • Title: Transcallosal approach for intraventricular gliomas: neuropsychological outcome and functionality of the corpus callosum.
    Author: Segna A, Zordan L, Beggio G, Alvaro L, Volpin L.
    Journal: J Neurosurg Sci; 2020 Jun; 64(3):291-301. PubMed ID: 32543168.
    Abstract:
    The transcallosal approach is commonly used for surgery of lateral and third ventricle lesions. Cognitive deficits due to the transcallosal approach still remain controversial. Even if enormous efforts have been made in order to understand specific functions of the corpus callosum, still little is known. The present study was aimed to evaluate the neuropsychological results and the functionality of the corpus callosum in transferring visual, auditory and tactile information between the two hemispheres in a group of patients who were treated using the transcallosal approach. The study evaluated the neuropsychological status of five selected patients presenting low-grade lesions of lateral ventricles that had not previously undergone surgical treatments and that did not receive radiotherapy and chemotherapy. All patients were administered an extensive neuropsychological testing postoperatively and the interhemispheric transfer of visual, auditory and tactile information was also evaluated. Two patients were tested preoperatively. Incisions of 2.4 cm maximum of the corpus callosum length were operated. The postoperative cognitive profile was normal. In some patients, a postoperative subnormal performance in memory functions was found but it cannot be attributable to the surgical approach given that it was altered even pre-surgically. Small incisions of the corpus callosum preserved the integrity of this anatomical structure in transferring lateralized information between the two hemispheres. The transcallosal approach is a safe surgical route to lateral ventricles lesions and the neuropsychological evaluation of these cases could give new insights in the comprehension of corpus callosum functions.
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