Disorder of brain, unspecified [G93.9], Reason for Study: ^Reason: pre op planning - no fiducials needed History: ams The exam was performed with pre-operative stealth protocol.There are ill-defined low signal intensity lesions with significant surrounding edema on T2 images, one on the right parietal and the other is on the left parietal lobes (right side lesion is bigger than the left).The right lateral ventricle occipital horn shows effacement due to mass effect. However, there is no midline shift.Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
Multiple various size intra-axial masses with surrounding edema (right side lesion is bigger than that of the left). Differential diagnosis include brain abscess, metastatic lesions, or primary malignant brain tumor. 