Peritoneal metastasis of high-grade glioma via Ventriculoperitoneal shunt

High-grade gliomas (HGGs) are aggressive primary brain tumors with a poor prognosis. Although extracranial metastasis is uncommon, peritoneal dissemination via ventriculoperitoneal (VP) shunts is extremely rare. Here, we describe the case of an 18-year-old female with HGG who developed peritoneal metastasis one year after VP shunt placement. Although VP shunting in the presence of an intracranial high-grade tumor is generally not contraindicated, shunt-related metastasis should be recognized as a potential risk and an important, albeit rare, clinical presentation. This case highlights the diagnostic challenges and therapeutic limitations of this rare complication. Understanding this phenomenon is crucial for developing effective monitoring and treatment strategies.