Se registro un caso de miositis parasitaria en el oso palmero Myrmecophaga trydactila en el parque zoologico "El Pinar" Caracas Venezuela. Con historia de claudicacion de miembros posteriores, dermatitis cronica supurada recurrente en region femoral, cervical y axilar, bacteriemia y septicemia. Se le practico necropsia por las tecnicas sistematica descrita para animales domesticos. Se tomaron secciones de tejido para estudio histopatologico y fueron procesadas por los metodos de procesamiento histologico. Fueron tomadas muestras de contenido gastrico y heces para estudios parasitologicos mediante la tecnica de flotacion. El examen macroscopico revelo emaciacion cronica marcada, dermatitis exudativa cronica severa con infeccion bacteriana secundaria. Se evidencio hidroperitoneo marcado y gastritis erosiva focal cronica nodular. Enteritis duodenal mucosa segmental y colitis cronica. Hepatomegalia con focos de fibrosis en el parenquima. Hemorragia petequial cortical en glandulas adrenales, bilateral. Miositis nodular en musculos semi membranoso y semi tendinoso de miembros posteriores. Los cortes histologicos evidenciaron: dermatitis cronica caracterizada por un infiltrado mixto polimorfonuclear neutrofilico abundantes eosinofilos degenerados e infiltrado mononuclear linfocitico y plasmocitario. Se observa miositis linfocitaria focal con la presencia de quistes intermiofibrilares con formas larvarias de aproximadamente 800 a 900 �Êm, enrolladas sobre si mismas, con cordones laterales, rodeadas de una capsula densa de tejido fibroso, respuesta fibroplasica y calcificacion focal. El estudio coprologico fue consistente con huevos de Trichinella sp.
The aim is report a case of myositis associated with the genus Trichinella parasite in a giant anteater Myrmecophaga trydactila a bear at the zoo "El Pinar" Caracas, Venezuela. With a history of lameness of hind limbs, chronic dermatitis draining in recurrent femoral region, cervical and axillary, bacteraemia and septicaemia. Necropsy was performed systematically by the techniques described for pets. Tissue sections were taken for histopathological examination and were processed by conventional methods of histological processing. Samples were taken from stomach contents and faeces for parasitological studies using the technique of flotation. Gross examination revealed marked chronic wasting.
Severe chronic exudative dermatitis with secondary bacterial infection. Evidenced hidroperitoneo marking. Focal nodular chronic erosive gastritis. Enteritis segmental duodenal mucosa and chronic colitis. Hepatomegaly with foci of fibrosis in the parenchyma. Petequial cortical hemorrhage in adrenal glands bilaterally. Nodular myositis in semi membranous muscle and tendon of semi hind limbs. The histological sections showed: chronic dermatitis characterized by abundant neutrophil infiltration polimorfonuclear mixed degenerate and few eosinophils, lymphocytes and mononuclear infiltrate plasmocitic. Lymphocytic focal myositis is observed in the presence of cysts intermiofibrilar larval forms of approximately 800 to 900ì, carried away on their own, lace sides, surrounded by a dense capsule of fibrous tissue, focal calcification and fibroplasic response. The study was consistent with eggs coprological Trichinella sp.
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