Recurrent neuroblastoma recently completed MIBG therapy; assess for response to therapy. Brain: The treated anterior and central skull base tumor is no longer discernible. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. There is scattered paranasal sinus mucosal thickening.Orbits: There is no longer discernible signal abnormality in the left optic nerve. The bilateral globes and ocular adnexa are unremarkable. There is no evidence of abnormal intraorbital enhancement or mass lesions.
1. The treated anterior and central skull base tumor is no longer discernible.2. No residual signal abnormality in the left optic nerve.