A fairly well-circumscribed high T2 signal mass in the right frontal lobe demonstrates substantial FLAIR partial suppression (T2 FLAIR mismatch). Peripherally it has a high FLAIR signal rim. It has low T1 signal without contrast enhancement. The mass generally has very facilitated diffusion on ADC and low rCBV. Spectroscopy demonstrates elevated choline and myoinositol peaks and depression of NAA.
Conclusion
Appearances are those of an adult-type diffuse glioma. In this age group, IDH mutations are very common and the presence of partial FLAIR suppression strongly favours this tumour to be an astrocytoma IDH mutant, most likely WHO grade 2, as there are no higher grade features.