Cutaneous T-cell form bovine leukosis in a Holstein cow

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  • Inokuma H.
    Department of Clinical Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine
  • Miura S.
    Department of Clinical Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine Present affiliation: Iwate Agricultural Mutual Aid Association
  • Sugimoto K.
    Department of Basic Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine
  • Kobayashi Y.
    Department of Basic Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine

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Other Title
  • ホルスタイン種乳牛に発生したT細胞性皮膚型牛白血病の1症例
  • 症例報告 ホルスタイン種乳牛に発生したT細胞性皮膚型牛白血病の1症例
  • ショウレイ ホウコク ホルスタインシュ ニュウギュウ ニ ハッセイ シタ Tサイボウセイ ヒフガタギュウ ハッケツビョウ ノ 1 ショウレイ

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Abstract

<p>A 41-month-old Holstein cow was presented with a chief complaint of astasia. It also had a history of nodular cutaneous lesions of 2 months’ duration. Several alopecic spots and nodular cutaneous masses were observed on the head, neck, shoulder and back. Physical examination revealed enlargement of most of the surface lymph nodes. Masses were also palpated in the pelvic cavity by rectal palpation. Histopathological examination of punch biopsy samples from the skin lesions and fineneedle aspiration smear cytology of the iliac lymph node showed large, atypical round cells. Although lymphocytosis was not noted by hematology, activities of serum total lactate dehydrogenase（LDH）, LDH isozymes and thymidine kinase were elevated. Serum antibody against bovine leukemia virus was negative. The cutaneous form of bovine leukosis was strongly suspected from these findings. Necropsy and histopathological findings confirmed the diagnosis of cutaneous T-cell form bovine leukosis.</p>

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