Female, 9 years old, history of medulloblastoma status post resection x2, radiation therapy, and chemotherapy. Now off therapy, evaluate for disease. Brain:Redemonstrated are changes from prior posterior fossa tumor resection. A small hemosiderin stained resection cavity within the inferior aspect of the cerebellum is unchanged in size and morphology as is mild T2 hyperintensity within the parenchyma surrounding the cavity is stable. No evidence of pathologic enhancement is seen within or around the treatment bed.Within the supratentorial brain, there is no concerning parenchymal signal abnormality or pathologic enhancement. No evidence of edema or mass effect is seen. No abnormal extra-axial collections are noted. The fourth ventricle remains chronically dilated while the remainder of the ventricular system is within normal limits. Hemosiderin staining along a right parietal approach shunt tract and in the adjacent right occipital horn are stable in appearance.Spine:The visualized spinal cord demonstrates normal signal intensity and morphology. No pathologic intramedullary or leptomeningeal enhancement is seen. No evidence of any intraspinal mass is noted.Spinal alignment is anatomic. Vertebral body morphology is within normal limits. Marrow signal characteristics are predominately fatty compatible with prior radiation. Otherwise, no concerning marrow replacement, edema or pathologic marrow enhancement is seen.
1.Stable findings related to prior surgery and treatment within the posterior fossa. No evidence to suggest recurrent disease is seen.2.No evidence of metastatic disease in the spine.