Histopathologically, cortical atrophy, basal ganglia lesions and white matter damage may be observed.
[symptoma.com]
Symmetric cystic lesions at the gray matter-white matter junction, especially in the sulcal depth of the frontal, parietal, hippocampal, and insular regions, are known early
[ajnr.org]
[…] pathologic lesions resulting from hyperammonemic encephalopathy ( 13, 14 ).
[ajnr.org]