Neoplasm of unspecified nature of brain [239.6], Reason for Study: ^Reason: pre-op, for biopsy on 6/23' please do thin cut T2 and thin cut T1 post-contrast axials only History: R thalamic lesion The imaging was performed with stealth protocol with fiducial markers attached.Again there is a multilobulated right basal ganglia mass extends toward right side midbrain. The mass shows extensive enhancement enhancement and shows low signal intensity on T2 weighted image with extensive surrounding edema.Above findings do not show any significant interval change since prior scan.Differential diagnosis remains unchanged including primary CNS lymphoma, primary malignant glioma and metastasis.No change of chronic ischemic infarct with encephalomalacia seen on the left cerebellar hemisphere.No change of underlying minimal to moderate nonspecific small vessel ischemic disease.The paranasal sinuses and mastoid air cells are clear.
Pre and post contrast enhanced MRI scan weight preop localization purposes with fiducial markers attached.Otherwise no interval change of right basal ganglia mass extends toward right midbrain with mass effect since prior scan.