3-year-old male with previous abnormal brain MRI. Hostpry of fulminant liver failure and coagulopathy secondary to Tylenol ingestion with hyperammonemia. Previously demonstrated diffuse gyral swelling, a diffuse symmetric pattern of abnormal T2 hyperintensity, as well as a striking pattern of diffuse white matter restricted diffusion has resolved. No discrete pathologic parenchymal enhancement is detected. No evidence of intracranial hemorrhage is seen. No abnormal extra axial fluid collections are present. The ventricular system is normal in morphology demonstrating slight interval enlargement, however likely due to a lack of previously documented mass effect from gyral swelling. Cerebellar tonsils are in appropriate position. Expected vascular flow voids are demonstrated. The visualized paranasal sinuses and mastoid air cells are now clear.
Previously demonstrated diffuse gyral swelling, a diffuse symmetric pattern of abnormal T2 hyperintensity, as well as a striking pattern of diffuse white matter restricted diffusion has resolved.