Mutism and Subsequent Dysarthria (MSD) and the Posterior Fossa Syndrome (PFS) have become well-recognized clinical entities which may develop after resection of cerebellar tumours. However, speech characteristics following a period of mutism have not been documented in much detail. This study carried out a perceptual speech analysis in 24 children and adolescents (of whom 12 became mute in the immediate postoperative phase) 1-12.2 years after cerebellar tumour resection. The most prominent speech deficits in this study were distorted vowels, slow rate, voice tremor, and monopitch. Factors influencing long-term speech disturbances are presence or absence of postoperative PFS, the localisation of the surgical lesion and the type of adjuvant treatment. Long-term speech deficits may be present up to 12 years post-surgery. The speech deficits found in children and adolescents with cerebellar lesions following cerebellar tumour surgery do not necessarily resemble adult speech characteristics of ataxic dysarthria.

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European Journal of Paediatric Neurology

de Smet, H. J., Catsman-Berrevoets, C., Aarsen, F., Verhoeven, J., Mariën, P., & Paquier, P. F. (2012). Auditory-perceptual speech analysis in children with cerebellar tumours: A long-term follow-up study. European Journal of Paediatric Neurology, 16(5), 434–442. doi:10.1016/j.ejpn.2011.12.013