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Nonlymphoid vertebral canal tumors in cats: 11 cases (1987-1995)
M S Levy1, G Mauldin, A S Kapatkin
1Department of Surgery, Animal Medical Center, New York, NY 10021, USA.
Objective:
To determine outcome of cats with nonlymphoid tumors of the vertebral canal that undergo surgery.
Design:
Retrospective study.
Animals:
11 cats.
Procedure:
Information obtained from the medical records included signalment, tumor location, gross evaluation of completeness of surgical excision, histologic diagnosis, and survival time.
Results:
Median age of cats was 12 years: all cats had negative FeLV and feline immunodeficiency virus test results. All cats underwent a hemilaminectomy or dorsal laminectomy. The tumor was located in the thoracic portion of the vertebral column in 6 cats. Six cats had intradural-extramedullary tumors. Tumors included meningioma (n = 5), malignant nerve sheath tumors (2), and meningeal sarcoma, chondrosarcoma, lipoma, and osteosarcoma (1 each). One cat was lost to follow-up, 1 cat with meningioma was alive 1,400 days after surgery, and 1 cat with a nerve sheath tumor was alive 2,190 days after surgery. Median survival time for the other 4 cats with meningioma was 180 days (range, 30 to 600 days).
Clinical Implications:
Cats with nonlymphoid vertebral canal tumors that undergo surgery may have a good prognosis.