Fig. 5

a Post-contrast coronal T1-weighted sequence in an 80-year-old woman with a 1-month history of confusion demonstrates a well-circumscribed, homogenously enhancing mass within the floor right middle cranial fossa with a broad dural tail that inferomedially contacts the right cavernous sinus. The right temporal lobe is compressed superiorly by the mass without invasion. The lesion was proven at surgery to be a meningioma. b Sagittal T1-weighted sequence in the same patient as a demonstrates the mass (arrow) to be isointense to grey matter and to extend anteriorly along the posterior aspect of the anterior cranial fossa floor. c Axial T2-weighted sequence in the same patient as a demonstrates the mass (arrow) to be mildly, homogeneously hyperintense to grey matter