Extraaxial mass in the left frontal lobe, ovoid, circumscribed (a clear difference can be established between the tumour and the adjacent cerebral cortex), based on dural implantation, mass effect (compresses the left lateral ventricle and displaces the structures of the line mean in 4.6 mm), heterogeneous signal intensity per liquid zone in the lower half; the solid segment of the tumour is hypointense in T1 and hyperintense in the sequences with T2 information, also shows restriction in the diffusion.
The signal of the deep and periventricular white matter of the frontal lobe and left parietal in the area of the tumour is frankly elevated in the sequences T2 and FLAIR with respect to the "U-fibers".
The SWI sequence demonstrates large calibre vessels crossing the mass and coming from the base of tumour implantation in the dura mater. No images that suggest bleeding or calcifications are observed in this sequence.
After intravenous administration of the paramagnetic contrast medium, intense enhancement of the solid component of the tumour, the periphery thereof, the base of implantation ("dural tail") and the adjacent meninges are observed.