A large heterogenously  cystic mass right posterior parieto-occipital lobe involving adjacent splenium of corpus callosum. mass  shows heterogenous peripheral ring enhancement with  central necrosis. peritumoral edema and adjacent mass effect, partially compressing adjacent brain parenchyma, compressing occipital horn of right lateral ventricle and mild contralateral midline shift across splenium of corpus callosum.  No midline shift. 
Rest of brain parenchyma appear normal with no other enhancing lesion.   
Findings consistent with aggressive cystic Astrocytoma / or Glioblastoma Multiforme  / butterfly Glioma.  
 