Spongy Degeneration of the Central Nervous System in a Calf

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  • 子牛の中枢神経系の海綿状変性
  • コウシ ノ チュウスウ シンケイケイ ノ カイメンジョウ ヘンセイ

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A 3-month-old Japanese black calf with sudden onset of recumbency and blindness was submitted for bacteriological, serological and pathological examinations. No significant results were obtained from serological tests for viral and bacterial infections. Microscopical examination revealed a widespread status spongiosus throughout the central nervous system, which was most prominent at the junctional areas of the gray and white matters. Each vacuoles was considered to be derived from either astrocytic swelling or intramyelinic edema. Similar lesions in the central nervous system have been reported in various hereditary diseases of calves including hereditary neuraxial edema. Thus, the present case was diagnosed as spongy degeneration of the central nervous system.

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