Fig. 2
Gross lesions in the canine brain with a right-sided middle cerebral artery infarct. a Swollen and flattened gyri with narrowed sulci (arrows). Poor demarcation of grey/white matter interface and a dusky discoloration of the grey matter (asterix). Transverse section at the level of the basal nuclei. b Focal petechial haemorrhages in the grey matter of several sulci (arrows). Transverse section at the level of the thalamus. c Focal detachment of neocortex from underlying white matter (arrows). Transverse section at the level of the thalamus. d Narrowed and compressed right lateral ventricle (arrow). Subfalcine herniation with displacement of the right cingulate gyrus (asterix). Note the general grainy appearance of the neural tissue caused by oedema leading to asymmetry of the hemispheres and midline shift towards the left hemisphere. Transverse section at the level of the caudate nucleus. R right cerebral hemisphere. L left cerebral hemisphere