Resumen

VALE-ECHETO, Oswaldo E et al. Multicentric Lymphoma or Multicentric Lymphosarcoma in Water Buffaloe (Bubalus bubalIs): Pathologic Anatomy. Report of one case. Rev. Cient. (Maracaibo) [online]. 2009, vol.19, n.3, pp.257-263. ISSN 0798-2259.

Bovine Enzootic Leukosis (BEL), also known as Viral Bovine Leukosis (VBL), is a viral, oncornavirus type C (retroviridae), neoplasic disease which occurs with or without neoplasic nodules. The disease has been clinically and morphologically diagnosed as suspicious cases in Venezuela since lab serological tests were not performed. Macroscopic and microscopic changes have been described in a few cases with neoplastic nodules and referred as a Bovine leukosis (BL), but none has been published. Bovine leucosis has also been referred in milking cows with or without neoplasic nodules, most cases have not been diagnosed by blood serum analysis and considered to be only suspicious cases. There are four distinct forms of BL (adult mullticentric, juvenile uncommon, thymic and cutaneous) have been reported in the literature around the world, this classification is based upon the presence of neoplasic nodules composed of anaplastic lymphoid tissue. This work reports a case of multicentric form of bovine lymphoma which could be suspicious of BL, in a 10 years old female water buffaloe in Mérida State, Venezuela. This report of one case of lymphosarcoma is supported by macroscopic and microscopic changes described. Aditionally, a frequency of 2% of positive cases diagnosed by ELISA and AGID tests is reported in the herd (300 buffaloes) of similar procedence of the described case.

Palabras clave : Bovine leukosis; multicentric lymphosarcoma; water buffaloe; neoplastic nodules.