Findings:
A well-defined extra-axial mass measuring 34 x 43 x 31 mm in its widest dimensions is seen arising from the left frontal convexity meninges with adjacent hyperostosis of the inner table of the skull.
The mass appears iso- to hypo- intense on T1 and mildly hyperintense on T2 sequences. It shows avid heterogeneous enhancement and dural tail post gadolinium administration.
The tumor exerts a positive mass effect on the left frontal lobe evidenced by sulci/gyri lateral ventricle effacement and mild perifocal oedema. Minimal midline shift (3 mm) is noted to the right.
Mild background small vessel ischaemic disease is noted. The brain parenchyma is otherwise unremarkable.
The pituitary gland is normal.
Mucosal thickening is seen in the right maxillary sinus and in the left frontal sinus. The paranasal sinuses and the mastoid air cells are otherwise clear.
The craniocervical junction is normal.
Conclusion:
MRI features of a meningioma of the left frontal convexity with mass effect and mild perifocal oedema and midline shift.