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  • Title: [Transient cerebellar mutism after removal of a posterior fossa tumor in two cases].
    Author: Endo K, Yoshii Y, Tsuboi K, Saito A, Aoki K, Nose T.
    Journal: No Shinkei Geka; 1995 Jun; 23(6):509-13. PubMed ID: 7609834.
    Abstract:
    We have reported the cases of two young patients who presented transient mutism in the course of recovery from removal of a cerebellar medulloblastoma. Although cerebellar symptoms were observed immediately after surgery, neither consciousness disturbance nor sensory aphasia was observed when the patients were mutic. From the analysis of serial magnetic resonance imaging (MRI). Gd-enhanced regions were noticed in the dentate nucleus and the cerebellar peduncle when mutism appeared, and they disappeared when mutism was gone. Although the mechanism of this interesting symptom is not clear, these MRI findings may indicate that focal ischemia or edema associated with surgical procedure may play a role in the appearance of this symptom.
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