Ependymoblastoma in a Holstein heifer
2009
Tagawa, M.(Obihiro Univ. of Agriculture and Veterinary Medicine, Hokkaido (Japan)) | Tani, N. | Kajiwara, A. | Kobayashi, Y. | Furuoka, H. | Matsumoto, K. | Ishii, M. | Inokuma, H.
A 10-month-old female Holstein heifer showed a sudden onset of clinical symptoms of head tilt, circling, increased extensor tone of all legs, and decreased level of consciousness. Cerebrocortical necrosis was suspected, and an administration of vitamin Bsub(1), corticosteroids, and anti-biotic was performed without a successful response. At necropsy, a neoplastic mass with a diameter of 3.5 cm in the cerebellum, dilated lateral ventricles on both sides and enlargement of the aqueducts cerebra were found. Findings suggest that cerebral cortex and brainstem signs had appeared as well as cerebellum signs through compression of the brainstem by cerebellar tumor and secondary hydrocephalus caused by obstruction of the cerebrospinal fluid. The neoplastic mass was diagnosed as ependymoblastoma by histopathological examination.
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