cerebellar mutism
Temporary loss of speech following posterior fossa surgery, characterized by inability to speak despite intact comprehension and motor function.
Full Definition
Cerebellar mutism is a well-recognized complication following neurosurgical procedures in the posterior fossa, particularly in pediatric patients undergoing resection of cerebellar or fourth ventricular tumors. The condition manifests as complete loss of speech output while comprehension, hearing, and other cognitive functions remain intact. Patients typically cannot speak, whisper, or vocalize, though they may communicate through gestures or writing. The mutism usually develops 24-48 hours postoperatively and can last from days to months, with gradual recovery being the norm. The exact mechanism remains unclear but likely involves disruption of cerebellar-cerebral pathways important for speech motor control.
Usage
Usage note: Primarily seen in pediatric posterior fossa surgery; distinct from true aphasia.
In Context
- "The child developed cerebellar mutism on postoperative day 2 following medulloepithelioma resection." — postoperative note
- "Speech therapy evaluation confirmed cerebellar mutism with intact comprehension and writing ability." — rehabilitation assessment