En plaque meningioma of the basilar meninges and Meckel's cave: MR appearance.

The magnetic resonance (MR) appearance of intracranial meningioma typically is of an extraaxial mass that enhances intensely after contrast injection (1–3). However, difficulty in differentiating a meningioma from other processes can occur because of the tumor’s location or other features (1–5). En plaque meningioma can be difficult to image and can simulate other lesions, especially when near the skull base or cerebellopontine angle. We report a case of en plaque meningioma consisting of multiple linear areas of basilar and meningeal enhancement without associated mass extending into Meckel’s caves and the internal auditory canals.