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  • Title: Reorganization of Language Areas in Patient with a Frontal Lobe Low Grade Glioma - fMRI Case Study.
    Author: Kośla K, Bryszewski B, Jaskólski D, Błasiak-Kołacińska N, Stefańczyk L, Majos A.
    Journal: Pol J Radiol; 2015; 80():290-5. PubMed ID: 26097525.
    Abstract:
    BACKGROUND: Functional magnetic resonance (fMRI) studies results in case of an adult patient with low grade glioma (LGG) in dominant hemisphere suggest brain plasticity process with acquisition of language functions by the non-dominant hemisphere speech regions. CASE REPORT: A 36-years old right-handed woman was admitted to the Department of Neurosurgery for surgical treatment of brain tumor. An MRI examination revealed a pathological mass in the left frontal lobe, in close topographical relationship to the Broca's area. A left fronto-parietal craniotomy was performed, with an intraoperative awake language mapping procedure. A total resection of the pathological mass was achieved. The tumor was examined histologically as LGG. In the follow-up MRI exam 32 months after the operation a tumor recurrence was suggested. The fMRI exams performed preoperative and 3, 32 and 41 months after the operation showed changes in language regions activation patterns, with a progressive right-sided activation of Broca's and Wernicke's areas. Pre- and postoperative cognitive evaluation by a neuropsychologist did not detect any language impairment. We present a running process of reorganization of language areas in a patient after brain tumor resection, from strong left-sided to symmetrical lateralization. CONCLUSIONS: 1. FMRI results in comparison with the psychological status of the patient proved contribution of functional reorganization to the preservation of language performance. 2. A slow growing LGG as well as the recurrence of the tumor near the left Broca's area might be the factors leading to reorganization of language-related areas by recruiting the right hemisphe.
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