Fig. 2

Radiological findings of the three cases of our cohort. Each line represents one patient (cases #1 to #3 from top to bottom). (A) Axial Flair sequence showing a homogeneous hyperintense extra-axial mass, well-circumscribed, in the left parietal hemisphere at the level of the posterior third of the falx, without a surrounding parenchymal edema, and the lesion of the right superficial middle cerebral artery territory infarction. (B) Axial T1-weighted MR image demonstrating a slightly homogeneous hypointense extra-axial mass. (C) After administration of gadolinium, MR axial T1FS image shows a marked and heterogeneous enhancement. Absence of dural tail sign. (D) Axial computed tomographic scan showing a round, well-circumscribed, hyperdense extra-axial lesion in the right temporal hemisphere at the level of the anterior third of the cerebellar tentorium. No adjacent edema or significant mass effect. (E) Axial T2* sequence showing no haemorrhage or hemosiderin deposits. (F) After administration of gadolinium, MR axial T1FS image shows a marked and heterogeneous enhancement. Absence of dural tail sign. (G) MRI coronal T2 sequence showing a right intraorbital intraconal mass, well-circumscribed, encapsulated, hyperintense in T2 compared to muscles, lying close to the medial and inferior rectus muscles, abuting the globe, pushing the optic nerve and in contact with the dura mater of the optic nerve. (H) After administration of gadolinium, MR coronal T1FS sequence shows a slow gradual and irregular enhancement. (I) On delayed contrast enhanced-image, we can notice a full filling of the mass