Postoperative Meningeal Enhancement on MRI in Children with Brain Neoplasms

ABSTRACT

The meninges composed of the dura, the arachnoid and the pia are significant sites of blood-brain barrier. Physical disruption of the integrity of the meninges from avariety of causes including surgery results in various patterns of meningeal enhancement on contrast enhanced MR images. It is important to distinguish normal reactive or benign postoperative enhancement from more serious leptomeningeal metastasis or infection, particularly in children with intracranial neoplasms. We present various pat-terns of meningeal enhancement on MRI in children following surgery for brain neop lasms.