 There is an enhancing left cerebellar mass measuring 2.2 x 1.9 cm with surrounding edema extending into the left middle cerebellar peduncle as well as associated susceptibility effect representing hemorrhage. There is local mass effect with partial effacement of the fourth ventricle, but no hydrocephalus. Susceptibility with associated volume loss in the left occipital and right parietal lobes likely related to chronic hemorrhage. There is also smaller foci of susceptibility seen in the left frontal lobe and right cerebellum. No evidence of acute infarct. No extra-axial collections. No midline shift or uncal herniation. No destructive lesions within the calvarium are appreciated.
1.Hemorrhagic lesion in the left cerebellum with enhancement and surrounding edema suspected to represent hemorrhagic metastasis. There is associated partial effacement of the fourth ventricle, but no hydrocephalus is seen. 2.Susceptibility with associated volume loss in the left occipital and right parietal lobes likely representing chronic hemorrhage which may be related to prior treated hemorrhagic metastases versus chronic hemorrhagic infarcts. Similar but smaller chronic hemorrhagic lesions without enhancement are also seen in the left frontal lobe and right cerebellar hemisphere. There is no MRI available for comparison, although these lesions are not seen on 2013 PET/CT.