Female, 40 years old, with numbness and tingling in the hands and feet, history of C5-6 transverse myelitis in October 2014. Assess for demyelination. A 5-mm round focus of T2 hyperintensity is evident just lateral to the corpus callosum in the right frontal lobe. No additional parenchymal lesions are seen.Diffusion weighted images are normal. No evidence of parenchymal edema or mass effect is seen. No pathologic parenchymal or extra-axial enhancement is detected. The ventricular system is normal in size and morphology.
A single 5-mm nonenhancing focus of signal abnormality is seen within the white matter lateral to the corpus callosum in the right frontal lobe. While such a lesion could represent demyelinating disease, in the absence of other lesions or more definitive findings, it is nonspecific.