Mitochondrial Encephalopathy with Lactic Acidosis and Stroke-like Episodes (MELAS)
- 40-year-old patient presented with acute onset of aphasia.
- Initial MRI showed cortical and subcortical diffusion-weighted abnormality in the left anterior temporal lobe.
- On follow-up imaging, this region of signal abnormality and swelling significantly increased. There was both restricted and facilitiated diffusion involving both cortex and subcortical white matter.