Figure 6a. Mixed pachymeningeal and leptomeningeal enhancement in dural lymphoma. Axial gadolinium-enhanced MR images obtained with FLAIR (a) and T1-weighted (b) pulse sequences show superficial extraaxial enhancement adjacent to the right parietal and occipital lobes. The enhancement is both pia-arachnoid, which extends into the subarachnoid spaces of the sulci (arrowheads in b), and dura-arachnoid, which runs along the inner margin of the skull.