Bulgarian Journal of Veterinary Medicine (Dec 2018)

T cell lymphoma in the atrium of a young bull

  • G. Farjanikish,
  • O. Dezfoulian ,
  • K. Qeisarbeigi

DOI
https://doi.org/10.15547/bjvm.1078
Journal volume & issue
Vol. 21, no. 4
pp. 483 – 488

Abstract

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In this report, T-cell lymphoma in the atrium of a 1.5-year-old Holstein bull is described. Macro-scopically, a large white to a yellow tumour mass with a size of 4.5×3.5×2 cm was observed in the left atrium. Histopathological examination revealed extensive infiltration of medium- to large-sized lymphocytic cells with round to oval nuclei and stippled chromatin, surrounded by a narrow rim of pale eosinophilic cytoplasm. Immunohistochemically, the tumour cells indicated positivity with CD3 and Ki-67, but negativity with CD79α, CD20 and S100. On the basis of the histologic and immuno-histochemical findings, this tumour was diagnosed as a T-cell lymphoma.

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