Ax/Cor T1W: Post gadolinium, midline mass lesion in the posterior fossa with irregular rim
of enhancement, with more avid enhancement more superiorly.
Proton Spectroscopy (Short TE): Over the inferior aspect of the lesion, marked elevation
of lipid/lactate peaks, elevation of choline, and depression of NAA.
Proton Spectroscopy (long TE): The inferior portion of the lesion demonstrates very high
choline and lipid/lactate peaks, with depression of NAA. More superiorly, choline remains
elevated, with only slight depression of NAA and no significant lipid or lactate levels.
Key words: mri mrs tumor neoplasia
Undifferentiated breast carcinoma
metastasis to the cerebellum