cerebellar mutism
A postoperative complication following posterior fossa surgery characterized by temporary loss of speech and communication abilities.
Full Definition
Cerebellar mutism is a well-recognized postoperative complication that can occur after surgical procedures involving the posterior fossa, particularly in pediatric patients undergoing resection of cerebellar tumors. The condition is characterized by the sudden onset of mutism (inability to speak) despite preserved consciousness and comprehension. Patients may also exhibit emotional lability, decreased oral intake, and hypotonia. The mutism typically resolves gradually over weeks to months, though some patients may experience long-term speech and language deficits. The exact mechanism is not fully understood but is thought to involve disruption of cerebellar-cerebral connections.
Usage
Usage note: Often abbreviated as CMS in clinical documentation. Avoid confusing with other forms of mutism.
In Context
- "The patient developed cerebellar mutism following medulloepithelioma resection, which gradually improved over six weeks." — Postoperative note
- "Risk factors for cerebellar mutism include midline tumor location and involvement of the vermis." — Surgical planning document