 Brain MRI:Postoperative findings related to suboccipital midline craniectomy and cranioplasty redemonstrated. There remains no evidence of residual tumor enhancement. The previously described nodular focus at the anteromedial aspect of the right cerebellar hemisphere with mild FLAIR hyperintensity is again seen. While more prominent than on the first two postoperative exams, it remains non-enhancing and is unchanged in intensity and size from the post recent comparison exam, again measuring 11 x 7 mm (series 801, image 20).The ventricles are stable in size and configuration. No diffusion signal abnormality to suggest acute infarction. No evidence of mass effect or midline shift. The major cerebral flow voids are intact. Complete spine MRI:The cervical, lumbar, and thoracic vertebral bodies are appropriate in overall alignment and height. The cervical spinal cord has normal signal characteristics and overall morphology. The spinal cord ends at the L2 level. The conus medullaris on sagittal imaging is grossly intact. The paravertebral soft tissues are unremarkable. There is no abnormal enhancement.
1.Post-operative findings related to posterior fossa tumor resection.2.Nodular non-enhancing, mild FLAIR hyperintense focus at the anteromedial aspect of the right cerebellar hemisphere is not significantly changed from the previous exam. This may represent treatment-related effects versus residual tumor. Continued close attention on follow-up imaging is advised.3.No evidence of spinal metastases.