CT demonstration of dural metastases in neuroblastoma.

Computed tomography provides a graphic picture of dural involvement due to metastatic neuroblastoma. These metastases occur along the external surface of the dura and cause further separation of the brain parenchyma from the bony calvarium. The dural metastases are continuous with subcutaneous deposits via the separated sutures. Sutural separation is nonuniform, and the sutural margins are indistinct due to bony involvement. The lytic bony metastases may produce localized calvarial thickening that may have a sunburst appearance.