Ventricular System Involvement
Tumor extension into or contact with the brain's ventricular system, affecting cerebrospinal fluid flow.
Full Definition
Ventricular system involvement refers to tumor extension into, contact with, or compression of the brain's ventricular system, which includes the lateral ventricles, third ventricle, fourth ventricle, and connecting pathways. This anatomical relationship is clinically significant as it may result in cerebrospinal fluid obstruction, hydrocephalus, and potential for leptomeningeal spread. In surgical planning, ventricular involvement may necessitate different operative approaches and carries implications for extent of resection. The proximity to ventricular surfaces also increases the risk of cerebrospinal fluid leakage during surgery. Editors should understand that this involvement may influence both immediate management and long-term prognosis.
Usage
Usage note: Important for surgical planning and hydrocephalus risk assessment.
In Context
- "Imaging demonstrated significant ventricular system involvement with resultant hydrocephalus." — Radiology report
- "The surgical approach was modified due to extensive ventricular system involvement." — Operative note