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Intracranial dermoid cyst in a dog
1Department of Veterinary Pathology, College of Veterinary Medicine, Oklahoma State University, Stillwater 74078.
Journal of the American Veterinary Medical Association
|January 15, 1988
Summary
A dog with hind-limb weakness was diagnosed with a rare cerebellar dermoid cyst. This congenital brain tumor caused progressive neurological deficits and was confirmed post-mortem.
Area of Science:
- Veterinary Neurology
- Comparative Pathology
Background:
- Congenital brain tumors are rare in domestic animals.
- Dermoid cysts, a type of teratoma, can occur within the central nervous system.
Observation:
- A 7-year-old female dog presented with a 3-year history of progressive hind-limb weakness and ataxia.
- Neurological examination revealed deficits in postural reactions, spinal reflexes, proprioception, and a head tilt.
- The dog's condition rapidly deteriorated following diagnostic procedures, leading to coma and death.
Findings:
- Necropsy revealed a dermoid cyst compressing the cerebellum and fourth ventricle.
- Histological examination confirmed the mass as a dermoid cyst, a congenital choristoma.
Implications:
- This case highlights the potential for congenital brain tumors to cause chronic, progressive neurological signs in dogs.
- Accurate diagnosis and understanding of cerebellar lesions are crucial for veterinary neurologists.
- Dermoid cysts, though rare, should be considered in the differential diagnosis of cerebellar and brainstem masses.