Figure 14-107.

Feline Ischemic Encephalopathy, Brain.

A, Lateral view of a collapsed area of the cerebral cortex. Note the torturous pattern of the vascular supply, likely a component of the reparative response to ischemic injury. B, Transverse section at the junction between the left parietal and occipital lobes, level of thalamus, cat. Chronic feline ischemic encephalopathy with unilateral cerebral degeneration-atrophy. The dorsolateral aspect of the left cerebral hemisphere has undergone necrosis, followed by cyst formation and collapse after phagocytic removal of the necrotic debris. Cystic spaces (arrows) have placed the previously existing parenchyma and the left lateral ventricle (LV) has expanded into the area of lost tissue (hydrocephalus ex vacuo).

(A courtesy Drs. V. Hsiao and A. Gillen, College of Veterinary Medicine, University of Illinois. B courtesy Dr. R. Storts, College of Veterinary Medicine, Texas A&M University.)