A small well defined ring enhancing round to oval cystic mass left Parietal lobe . it shows uniform wall enhancement with central cystic necrosis.  Mild peritumoral edema. No ventricular compression or midline shift. 
Rest of brain parenchyma appear normal. 
Differentials include Cystic Glioma  /  cystic metastasis / or abscess.  
 
 