cerebellar mutism syndrome
Also written as: CMS — Cerebellar Mutism Syndrome
Post-operative complication following posterior fossa tumor surgery characterized by loss of speech and other neurological deficits.
Full Definition
Cerebellar mutism syndrome (CMS) is a well-recognized complication that can occur following surgical resection of posterior fossa tumors, particularly in pediatric patients with medulloepitheliomas and other cerebellar tumors. The syndrome typically manifests 1-2 days post-operatively with sudden onset of mutism, often accompanied by emotional lability, hypotonia, and ataxia. While the exact mechanism remains unclear, it is thought to involve disruption of cerebellar-cerebral connections, particularly the dentato-thalamo-cortical pathway. The condition is usually transient, with speech recovery occurring over weeks to months, though some patients may have persistent deficits. Recognition of this syndrome is crucial for patient counseling and rehabilitation planning.
Usage
Usage note: Always specify as a syndrome, not just cerebellar mutism alone.
In Context
- "The patient developed cerebellar mutism syndrome on post-operative day 2 following medulloepithelioma resection." — Clinical progress note
- "Speech therapy was initiated early to address the cerebellar mutism syndrome." — Rehabilitation plan