RESUMO.Torção esplênica é uma condição rara em cães. A rotação ocorre em seu pedículo vascular e geralmente ocorre concomitantemente à dilatação vólvulo gástrica, porém a torção primária esplênica é rara. Segundo a literatura essa enfermidade acomete normalmente cães de grande porte e raças de peito profundo. Os sinais clínicos, achados laboratoriais e radiográficos são inespecíficos e inconclusivos para o diagnóstico preciso de torção esplênica. Assim, a ultrassonografia juntamente com o uso do Doppler colorido tem sido relatada como ferramentas fundamentais para a sugestão do diagnóstico de torção esplênica, que é confirmado através de laparotomia exploratória, geralmente seguida de esplenectomia total como forma de tratamento. Este estudo relata o caso de um cão da raça Pit Bull, três anos de idade, cujo exame ultrassonográfico foi uma ferramenta de grande valor diagnóstico para detecção desta enfermidade.Palavras chave: Baço, torção esplênica, ultrassonografia esplênica Primary splenic torsion in dogs: Case report ABSTRACT. Splenic torsion is a rare condition in dogs. The torsion occurs in the vascular pedicle and usually occurs concomitantly with dilatation gastric volvulus, but the primary splenic torsion is rare. According to the literature, this disease usually affects dogs of big size and breeds of deep chest. Clinical signs, laboratory and radiographic findings are nonspecific and inconclusive for the accurate diagnosis of splenic torsion. Thus, ultrasound along with the use of color Doppler has been reported as fundamental tools for the suggestion of the diagnosis of splenic torsion, which is confirmed by exploratory laparotomy, usually followed by total splenectomy as a form of treatment. This study reports the case of a 3-year-old Pit Bull dog whose ultrasound examination was a tool of great diagnostic value for the detection of this disease. Keywords: Spleen, splenic torsion, splenic ultrasonographyTorsión primaria del bazo en los perros: Reporte de un caso RESUMEN. Torsión esplénica es una enfermedad poco frecuente en los perros. La rotación se produce en su pedículo vascular y por lo general se produce simultáneamente con la dilatación vólvulo gástrico, pero la torsión primaria esplénica es rara. Según la literatura esta enfermedad normalmente afecta a los perros de tamaño grande y razas de pecho profundo. Los signos clínicos, de laboratorio y los hallazgos radiológicos son inespecíficos y no concluyentes para el diagnóstico preciso de la torsión esplénica. Por lo tanto, la ultrasonografía junto con el uso del Doppler a color ha sido reportada como

The objective of this study was to evaluate the testicular changes and detect the presence of Leishmania sp. in the testicles and semen of dogs with Visceral Leishmaniasis (VL). The animals were obtained from the Zoonoses Control Department of Teresina, PI, and taken to the kennel of the Agricultural Sciences Center of the Federal University of Piauí, where they remained were maintained for two months and subsequently euthanized for testicles removal. Semen samples were collected from 12 dogs, 06 positive and 06 negative for VL. The following diagnostic techniques readouts were assessed for the sampled animals: testosterone dosage, immunohistochemistry (IMH), histopathology of the slides containing the testicular material, and seminal evaluation by polymerase chain reaction (PCR). Testosterone values remained within the normal range for the canine specie and did not differ statistically among the experimental groups but displayed lower serum concentrations than those of the control group. All the testicular and semen samples from the dogs were negative for VL as determined by techniques IMH and PCR, respectively. The results of testicle histopathology revealed the presence of several lesions with statistical difference among the experimental groups. Parasitized dogs with VL have testicular lesions that may compromise the reproductive efficiency of these animals.