Cutaneous lymphoma in a cow - a case report

Abstract

U ovom radu prikazan je slučaj krave simentalske rase, starosti dve godine i šest meseci kod koje je postojala sumnja na nodularni dermatitis, sredinom 2017 godine. Kliničkim pregledom ustanovljeni su brojni noduli veličine od nekoliko milimetara do približno 10 centimetara diseminovani dominantno po koži vimena i perineuma, od kojih su neki konfluirali i egzulcerisali. Opšte stanje krave je bilo nepromenjeno. Krava je prema rezultatima laboratorijskih analiza bila negativna na prisustvo antitela protiv virusa leukoze goveda, pokazala je negativnu reakciju pri tuberkulinizaciji i bila je vakcinisana protiv nodularnog dermatitisa. Nakon hirurške ekscizije kožnog čvora, uzorak je bio negativan na prisustvo genoma virusa nodularnog dermatitisa. Kako bismo ustanovili morfologiju kožne lezije, urađena je histopatološka analiza. Histopatološka analiza je pokazala infiltraciju dermisa i subkutisa brojnim mononukleranim ćelijama koje pokazuju ćelijsku atipiju. Tada je postavljena sumnja da se radi o kutanom limfomu. Nadalje, imunohistohemijsko ispitivanje je potvrdilo da se u infiltratu nalaze isključivo CD3 imunopozitivne ćelije što sugeriše da se radi o T-ćelijskom neepiteliotropnom limfomu

In this paper the case of a 2.5-year-old Simmental cow, with suspicion of lumpy skin disease in mid-2017 in Serbia will be presented. Clinical examination revealed numerous nodules of varied size from a few millimeters to approximately 10 centimeters disseminated predominantly on the skin of the udder and the perineum, some of which were coalescing and exulcerated. The general condition of the affected animal was unchanged. According to the results of laboratory analysis, the cow was negative for the presence of antibodies against the bovine leukemia virus, showed a negative reaction in tuberculinization and was vaccinated against lumpy skin disease virus. After the surgical excision of one skin node, the sample tested negative for the genome of lumpy skin disease virus. In order to establish the morphology of the skin lesion, a histopathological analysis was performed. Histopathological analysis showed the infiltration of the corium and subcutaneous tissue by numerous mononuclear cells showing cellular atypia. Suspicion of cutaneous lymphoma was established. Furthermore, the immunohistochemical examination confirmed that the infiltrate contained exclusively CD3-immunopositive cells, suggesting a T-cell origin nonepitheliotropic lymphoma.