64-year-old male with a possible brain biopsy and limited for presence of intracerebral hemorrhage Status post open brain biopsy changes with foci of pneumocephalus and left parietal burr hole. There is a high density focus in the superior medial aspect of the left postcentral gyrus compatible with intraparenchymal hemorrhage. Extensive hypo-attenuation involving predominantly the left parietal lobe with extension into the posterior left frontal lobe, anterior aspect of the left occipital lobe and splenium of the corpus callosum associated with ill defined lesions and mass effect on the occipital horn of the lateral ventricle that were better visualized on prior MRI. The extension of the ill defined hypoattenuation to the corpus callosum is highly suggestive of a glioblastoma multiforme, versus less likely CNS lymphoma. The basal cisterns are normal in size and configuration.The orbits are unremarkable. The visualized paranasal sinuses and mastoid air cells are normally pneumatized.
1.Postsurgical changes with small expected high density left postcentral gyrus intraparenchymal hemorrhage. 2.Ill-defined hypoattenuation ill defined lesions predominantly involving the left parietal lobe were better visualized on recent MRI. The extension into the splenium of the corpus callosum is highly suggestive of GBM versus CNS lymphoma.