FINDINGS Figure 91-1. Axial post-contrast T1WI through the temporal lobes. There is a homogenously enhancing extraaxial mass within the right middle cranial fossa (arrow). Figure 91-2. Cerebral blood volume (CBV) map from dynamic susceptibility contrast MR perfusion. There is markedly elevated relative Cerebral Blood Volume (rCBV) within the right middle cranial fossa mass (arrow). Figures 91-3 and 91-4. Coronal and sagittal reformatted post-contrast 3D T1WI through the frontal lobes, respectively. There is a concurrent dural-based enhancing mass with dural tails at the left frontal convexity with contiguous osseous and extracranial components (arrows).
DIFFERENTIAL DIAGNOSIS Meningioma, lymphoma, hemangiopericytoma, metastases.
DIAGNOSIS