Merck Manual

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Professional Version

Neoplasms in Poultry


John Dunn

, DVM, MS, PhD, USDA-ARS-Avian Disease and Oncology Laboratory

Last full review/revision Oct 2019 | Content last modified Oct 2020

A rare neoplastic disease of turkeys known as lymphoproliferative disease that has been reported in Europe and Israel is induced by a retrovirus that is distinct from both the leukosis/sarcoma and reticuloendotheliosis viruses. Although reports suggest that lymphoproliferative disease has recently been detected by PCR in a small number of wild turkeys in the USA, incidence of the disease has always been sporadic and therefore it is not discussed here.

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