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Universidade Federal Do Rio Grande Do Sul Faculdade De Veterinária Programa De Pós-graduação Em Ciências Veterinárias
| Content Provider | Semantic Scholar |
|---|---|
| Author | Márcia, Sandra Marques, Tietz |
| Copyright Year | 2002 |
| Abstract | The enzootic bovine leukosis (EBL) is a disease caused by a retrovirus that has two distinct manifestations in adult animals, the multicentric lymphosarcoma and persistent lymphocytosis in adults (LP). The multicentric lymphosarcoma in adults is characterized by the presentation of tumors in various organs in cattle older than two years. This study analyzed the clinical history and pathological findings in 30 cases of EBL, diagnosed a total of 845 cattle necropsied in the Setor de Patologia Veterinária of Universidade Federal do Rio Grande do Sul, between the period January 1999 to January 2011. All affected cattle were dairy females, between three and nine years old, and 27 Holstein (90,0%), two cross breed (6,3%) and Jersey (3,7%). The main clinical signs shown by the cattle were changes, locomotor characterized by progressive paralysis of the limbs, weight loss, most prominently superficial lymph nodes and exophthalmus. The gross lesions were characterized by neoplasms masses, pale yellowish-white, grayish or pinkish, found in lymph nodes, heart, on the meninges of the spinal cord, abomasum, intestines and kidneys. The tumor infiltration on the meninges of the spinal cord was observed in 24 animals, and the lumbar (20/24) and cauda equina (11/24) were commonly affected. Occasionally, the masses were also observed in the cervical region (6/24), near the swelling, and in the thoracic region (2/24). In histological examination, these tumor masses were composed of diffuse infiltration of neoplastic lymphocytes, and in most cases presented as small noncleaved cells. The occurrence of lymphosarcoma infiltrating the spinal cord should be considered in the diagnosis of diseases which lead to changes in locomotor adult dairy cattle. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.lume.ufrgs.br/bitstream/handle/10183/32136/000786666.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
