Figure 14-29.

Chronic Bacterial Abscess, Leptomeninges of the Cerebellum, Sheep.

The abscess (arrow), which resulted from direct extension from an inner ear infection, compresses and distorts the cerebellum. It is walled off from the adjacent cerebellum by a distinct fibrous capsule synthesized by fibroblasts from the adjacent leptomeninges. This abscess likely arose in the leptomeninges of the cerebellum and grew to compress adjacent cerebellum.

(Courtesy College of Veterinary Medicine, University of Illinois.)