the world of radiology is the world of magic and gessing
Cystic meningioma. A, Axial postcontrast Tl -weighted image reveals a cystic mass lesion involving the left frontal lobe with peripheral enhancement, as well as enhancement around a trapped CSF intensity collection laterally (white arrow). B, Axial postcontrast Tl -weighted image near vertex of the head demonstrates the extra-axial nature of the mass with associated dural attachment (white arrow). (Click to magnify figure)
Meningioma in a 27-year-old woman who presented with new-onset seizure. A, Axial unenhanced CT image demonstrates a large hyperdense extra-axial mass in the left temporal region with associated central calcification (black arrow) and surrounding edema. B, Axial enhanced CT demonstrates intense homogeneous enhancement. Distinction of intra- versus extra-axial mass by CT can be difficult. C, Axial T2-weighted MR image clearly demonstrates a CSF cleft around the circumference of the tumor (arrowhead) indicating this to be an extra-axial mass. D, Sagittal postcontrast Tl -weighted image demonstrates a dural tail anteriorly and posteriorly along the tentorium (white arrows). (Click to magnify figure)
