A heterogenous peripherally enhancing mass right posterior parieto-occipital lobe. mass shows heterogenous peripheral ring enhancement with central necrosis. Mass involving splenium of corpus callosum. Mild  peritumoral edema with  mild mass effect with mild anterior displacement of occipital horn of right lateral ventricle.  
Rest of brain parenchyma appear normal. 
Differentials include Cystic Astrocytoma /  Glioblastoma Multiforme / or cystic metastasis.
 
 