Secondary malignant neoplasm of brain [C79.31], Reason for Study: ^Reason: in resection cavity from prior tumor History: tumor resection Post stereotaxic biopsy follow up for the recurrent left cerebellar hemisphere tumor.Gross size, MR signal intensities and enhancing pattern of the left cerebellar lesion do not show any significant interval change.There is linear biopsy track demonstrating blood products from the posterior aspect of the lesion through the mesial aspect of the left cerebellar hemisphere.The degree of surrounding edema and mass effects do not show any significant interval change. The 4th ventricle shows mass effects especially left lateral aspect, however, there is no evidence of hydrocephalus. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Post biopsy status of the recurrent left cerebellar mass through the midline occipital craniectomy site. 2. Postoperative no unusual finding, specifically no interval change of the gross size of the mass and the extent of surrounding edema and mass effects since prior scan.