A large irregular ring enhancing lesion left parieto-temporal lobe. it shows marked perilesional edema with mass effect. Mild compression on left lateral ventricle. no midline shift.  Mass shows irregular peripheral ring enhancement with central necrosis.
Findings consistent with primary tumour  like Astrocytoma / GBM Glioblastoma Multiforme. 
Other differentials include Metastasis. 