Classical Meningioma are extra axial and broad based, appear hypo-isointense on T1WI and iso-hyperintense on T2WI to the gray matter, and show intense homogenous contrast enhancement (Figure 1).
Common locations include parasagittal, convexity, and sphenoid wing. Uncommon locations include olfactory groove, optic nerve sheath, intraventricular, tentorial apex, and intraosseous and posterior fossa (Figures 4, 5, 6, 7, 8).
Peritumoral edema is seen in almost 50% of lesions. It is related to pial blood supply and vascular endothelial growth factor (VEGF) [1, 6]. Infiltrative and microcytic meningiomas are associated with significant edema  (Figure 9).
MR spectroscopy shows elevated choline and decreased creatinine in atypical and malignant meningiomas. Alanine is often elevated although glutamate-glutamine and glutathione are more specific  (Figure 13).
Intratumoral, subdural, and subarachnoid hemorrhage is an uncommon finding . Lipomatous or lipoblastic meninigioma is a rare subtype . The differential diagnoses include dural metastases, hemangiopericytomas, lymphoma, and neurosarcoidosis [1, 2, 5].
Varied appearances can make meningiomas difficult to differentiate from other pathologies.
The authors have no competing interests to declare.
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