LUMBO SACRAL INTRASPINAL GANGLION CYST IN A CAT

Intraspinal cysts include degenerative non-meningeal extradural cysts arising from the periarticular joint tissue, and, less commonly, from the ligaments of the vertebral canal and intervertebral discs. Spinal extradural synovial and ganglion cysts usually cause slowly progressive clinical signs but occasionally are clinically silent. Histologically, synovial cysts are lined by synovium-like epithelial cells, whereas ganglion cysts have a collagenous capsule or fibrous wall surrounding myxoid material and they should have no communication with the joint cavity; they seem to represent the same entity at different stages of development. The purpose of the present report is to describe the clinical signs, surgical treatment and outcome in one cat presenting extradural spinal ganglion cyst.