The death associated with diarrhea of 7 newborn alpacas from the Maranganí-Cuzco community was studied. The animals showed signs of reddish watery diarrhea, dehydration, anorexia, and weakness. The gross lesions in the small intestine mucosa were reddish, augmented and necrotic, with severe hiperemia and gas. They showed small white foci of 0.2 cm diameter located at the final part of yeyuno and ileon. Two types of oocysts were detected. The first was piriform-shape of 90 microns (Eimeria macusaniensis) and the second, elipsoidal-shape of 30 microns (Emeria lamae). Microscopic lesions presented an acute, diffuse, and severe catarrhal necrotic enteritis with hiperplasia of Lieberkun cripts, and thickness or shortness of the villi, with moderate to severe corionic infiltration of eosinophils, linfocites and plasmacites, along with numerous endogenous forms: schizonts, microgamonts, macrogamonts, and nonsporulated oocysts at level of the crypts and villi.
<p>El objetivo del presente estudio fue determinar la frecuencia de neoplasias perianales en caninos mediante diagnóstico histopatológico en el Laboratorio de Patología Animal de la Universidad Nacional Mayor de San Marcos, Lima, Perú, en el periodo 2005-2012. Se diagnosticaron 52 casos de neoplasias perianales dentro de 1283 casos de neoplasias caninas (4.1%). El adenoma de glándulas hepatoides fue el de mayor frecuencia (46.2%, 24/52).</p>
Se evaluaron un total de 4701 protocolos de caninos, procesados en el Laboratorio de Histopatología de la Facultad de Medicina Veterinaria de la Universidad Nacional Mayor de San Marcos (Lima) durante el periodo 2003-2014 para determinar la frecuencia de los tipos de neoplasias diagnosticadas mediante histopatología y en el caso del tumor venéreo transmisible (TVT) por citología. Se hallaron 3480 casos de neoplasias, de las cuales 554 (11.8%) pertenecían a caninos de 0 a 5 años de edad. Los canes de 4 a 5 años (261 casos; 47.1%) y los de sexo masculino (333 casos; 60.1%) presentaron la mayor cantidad de neoplasias. Las neoplasias benignas predominaron con 279 casos (50.4%), siendo el TVT la neoplasia más frecuente de este grupo y del conteo general con 94 casos (33.7%). La neoplasia maligna más frecuente fue el rabdomiosarcoma, con 47 casos (17.1%).
The possible role of Neospora caninum and other abortogenic infectious agents in dairy cattle abortions was evaluated utilizing samples collected from 9 herds in the Lima Valley between January 1998 and December 1999. Heart, liver, lung, muscle, thymus, spleen, adrenal gland, brain and thoracic fluid samples were taken from 29 aborted 3-7 month gestation fetuses, and serum samples were collected from their mothers. The presence of anti gens and antibodies against N. caninum, bovine cliarrhea virus (BVDV), Bruce/la abortus and Leptospira was determined utilizing immunoperoxidase, immunofluorescence, virus neutralisation, indirect ELISA and microaglutination tests respectively. One half ofthe tissue samples were fixed for histopathological examination. Of the aborted fetuses, 55.2% (16/29) and 20.6% (6/29) were positive to N. caninum antigen and BVDV. N. caninum antibodies with titers between 1 :20 and 1 :40 were detected in three of the fetuses, but no antibodies against BVDV or Leptospira were found. Antibodies against N. caninum and BVDV were detected in 62% ( 18/29) and 72.4% (21/ 29) of the aborted cows. No antibodies against either Bruce/la abortus or the Leptospira serovars canicola, pomo na, icterohemorrhagiae, and hardjo were detected. Two of the fetuses had histopathological lesions (moderate inflammation with small areas of necrotic tissue in the brain, heart, muscle and thymus tissues) similar to those described in the literature. The high prevalence of N. caninum antigen in fetuses from positive cows and the moderate presence of BVDV contrasts with the absence of other abortogenic agents, strongly suggesting an association of N. caninum with the high incidence of abortion in dairy cows from the Lima Valley.
Post-mortem written protocols (including histopathology slides) from necropsies performed on 3211 canines in the Histopathology Laboratory of Faculty of Veterinary Medicine, San Marcos University between 1973 and 1999 were analyzed. Ofthis total, neoplasic lesions were found in 693 (21.21 %) cases, including 147 (3.11 %) mammary tumors. Among the fema le canines, mammary tumors comprised 40. 83 % ( 14 7 /3 60) of ali neoplasias, including 90 cases ofadenocarcinoma, and were more conunon in animals aged 6 years or greater. Incidence among breeds was: Pug (33.33%), Dachshund (25%), Terrier (28.57%), and Cocker Spaniel (28.13%).
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