 BRAIN: There are postoperative findings related to suboccipital craniectomy cranioplasty for resection of a posterior fossa mass. There is no evidence of residual enhancing tumor, however, there is an anteromedial nonenhancing nodular focus of T2 hyperintensity on the right that measures 11 x 7 mm, previously 7 x 7 mm. There is an unchanged prominent extra axial CSF space along the left cerebellar hemisphere. The ventriculostomy catheter has been removed and the ventricles are decreased in size. For example, the lateral ventricles measure 36 mm in transverse dimension, previously 42 mm and the third ventricle measures 6 mm is in transverse dimension, previously 9 mm. There is no evidence of acute infarct. The myelination pattern is appropriate for age. There is no abnormal intracranial enhancement. There is no midline shift or herniation. The major cerebral flow voids are intact. SPINE: The vertebral column alignment is within normal limits. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The spinal cord displays normal signal and morphology with the conus terminating at L2. There is no evidence of intraspinal mass or abnormal enhancement. The paravertebral soft tissues are unremarkable.
1.Postoperative findings related to posterior fossa tumor resection without evidence of residual enhancing tumor, however, a non-enhancing nodular focus of T2 hyperintensity along the right anteromedial resection margin has grown slightly. While non-specific and possibly treatment related, this raises concern for tumor progression and close attention on follow-up imaging is suggested. 2.No evidence of intracranial or spinal metastases.