Figure 1
From: IgG4-related intracranial hypertrophic pachymeningitis with skull hyperostosis: a case report
Preoperative images. A. Anteroposterior view of skull X-ray radiography shows left skull bone effacement near the vertex. B-D. Magnetic resonance image shows an area of abnormal bony marrow over left high convexity showing loss of normal fatty marrow with moderate enhancement after contrast injection (arrow). Mild subperiosteal soft tissue thickening and adjacent dura and leptomeningeal thickening and enhancement (arrowhead) are apparent. The left central and precentral sulci are filled with abnormal enhancing lesion (white arrows).