Pre-treatment planning MRI for a left cerebellar tumor. There is a heterogeneous mass that measures up to 20 mm in the left medial cerebellar hemisphere. There also appears to be a punctate satellite lesion or exophytic component anterolateral to the dominant mass. There is slight effacement of the left lateral aspect of the fourth ventricle, but no evidence of obstructive hydrocephalus. There appears to be a punctate focus of T2 hyperintensity in the splenium of the corpus callosum, which may be artifactual. There is a right parietal lobe developmental venous anomaly. There is a cavum septum pellucidum.
Pretreatment planning MRI demonstrates a mass that measures up to 20 mm in the left medial cerebellar hemisphere with an adjacent punctate satellite lesion or exophytic component. 