First discovered in 1964 within a cluster of cats with lymphosarcoma. In 1911 he was one of the earliest recorded persons using radium to treat lymphosarcoma. The most common is hemangiosarcoma, followed by lymphosarcoma, mast cell tumour, and osteosarcoma. Lymphoma/lymphosarcoma is the most common malignancy in ferrets. Bovine foamy virus was isolated in 1969 from cattle with lymphosarcoma. Historically, another name for lymphosarcoma was "Kundrat's disease". Abnormalities of chromosome 13 have been observed in canine osteoid chondrosarcoma and lymphosarcoma. Lymphoma and lymphosarcoma is common among cats with FeLV infections.