Fig. 2From: Primary intraosseous meningioma: an osteosclerotic bone tumour mimicking malignancy a CT axial image shows a primarily sclerotic lesion involving the diploe (white arrow) extending across the midline (black arrow). b There is a polypoid mass in the right frontal sinus (asterisk). c Sagittal reconstruction shows the lesion (white arrows) and the polypoid mass (asterisk)Back to article page