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Copyright of Arquivos de Ciências Veterinárias e Zoologia da Unipar is the property of Associacao Paranaense de Ensino e Cultura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The Transmissible Venereal Tumor (TVT), classified as a round cell tumor, is considered one of the oldest existing tumors. It affects dogs all over the world and has a contagious characteristic. Despite the good response to clinical treatment in most cases, it can sometimes have non-classical presentations and even different behavior. Thus, the present study aims to report 3 cases of atypical TVT treated at the Veterinary Medical Teaching Hospital of the State University of Maringá (UEM) in Umuarama, Paraná, aiming to describe the epidemiology and clinical-pathological aspects, focusing on the diagnostic method used, the treatment of choice and the clinical follow-up of each case. Cases: Case records of 3 intact male mongrel dogs with atypical Transmissible Venereal Tumor (case 1: intranasal; case 2: intra-abdominal and case 3: cutaneous with lymph node metastasis) were reviewed regarding history, clinical signs, duration of clinical signs, examination findings, results and findings of complementary exams (hematological, biochemical, radiographic, ultrasonographic and cytological), treatment, follow-up and final result. Case 1: had an ulcerated mass in the nasal plane causing significant airway obstruction and respiratory difficulty. Case 2: had a lesion in a typical location (penile mucosa in the glans area) but with a large intra-abdominal mass in the lumbar paravertebral region, causing compression of important structures. Case 3: on the other hand, had cutaneous TVT with several ulcerated plaque lesions all over the skin, in addition to popliteal lymph node enlargement due to metastasis later confirmed by microscopy. All dogs reported were mixed breed, intact males with free access to the street. Despite the fact that each patient had their own anatomical tumor characteristics, they were all diagnosed through cytological examination and all classified as lymphocytic TVT. The standard treatment for this neoplasm was instituted; the chosen chemotherapy was vincristine sulfate at a dose of 0.75 mg/m2 intravenously every 7 days for 5-7 weeks. In addition, all 3 animals needed supportive treatment due to anorexia, bacterial contamination secondary to injuries, dehydration and pain. Discussion: Usually, TVT is not considered malignant, not causing metastasis, however it is now known that its behavior has changed a lot and more and more cases of metastatic or highly infiltrative TVT have been reported. The 3 cases presented in this report had epidemiological characteristics as mentioned in the literature, but the location, macroscopic and radiographic characteristics are uncommon for this neoplasm, that is, with an atypical tumor presentation. This demonstrates the importance of a good clinical evaluation and, especially, of the cytological exam, which was essential for the definitive diagnosis for the three cases presented. It is speculated that more “aggressive” cases of TVT may be correlated with the plasmacytic cytological type, however none of the patients described here had this cytological presentation. Thus, the clinician must be aware of the risk factors associated with this neoplasia, because even in non-classical presentations, the lymphocytic cell morphological characteristic was present and the patients responded well to the classic treatment, not requiring a change in chemotherapy protocols, however a special attention must be paid to the particularities involved in each presentation of the same tumor in different patients. [ABSTRACT FROM AUTHOR]

Copyright of Acta Veterinaria Brasilica is the property of Acta Veterinaria Brasilica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Os fungos são importantes agentes etiológicos de afecções em aves, apresentando diversas formas clínicas. A inalação dos esporos liberados na reprodução fúngica é a principal forma de infecção, seguida da ingestão de alimentos contaminados (FRAGA, 2014). Dentre todas as espécies, algumas são mais patogênicas e apresentam uma maior casuística, como por exemplo a Candida albicans, responsável por causar principalmente problemas digestórios. A C. albicans é uma levedura comensal na microbiota das aves, porém as mesmas podem se tornar patogênicas em casos de imunossupressão ou desequilíbrio na microbiota saprófita. Os principais fatores que levam a esse desequilíbrio são o estresse, manejo inadequado do cativeiro, antibioticoterapia e corticoterapia prolongadas, desnutrição, alta densidade populacional, doenças pré-existentes, alterações climáticas e característica do próprio patógeno. Identificar a virulência do fungo é de suma importância para o prognóstico, observado pela formação de filamentos e a produção das enzimas proteinases e fosfolipases (LOURENÇO, 2014). Essas enzimas causam formação de poros na membrana celular, tornando-as mais susceptíveis em serem invadidas e prejudicam as funções normais das células. Os sinais clínicos variam de acordo com o local afetado, podendo ser observadas disfunções no trato gastrointestinal, levando à regurgitação, diarreia, dilatação do proventrículo associados à processos inflamatórios, é possível observar também conjuntivite, além de alterações no sistema respiratório, desde as narinas, seguindo pela traqueia e atingindo os pulmões e sacos aéreos. O presente trabalho possui como objetivo relatar um caso de pneumonia micótica causada pela infecção de C. albicans em um exemplar de Coruja-suindara (Tyto furcata), encaminhada para necropsia no Laboratório de Patologia Veterinária (LPV) na Universidade Federal do Paraná (UFPR) - Setor Palotina. Uma coruja, fêmea, adulta e pesando 298 gramas, foi encaminhada pelo Instituto Ambiental do Paraná (IAP) de Toledo para o Hospital Veterinário - UFPR Setor Palotina para avaliação na Clínica Médica e Cirúrgica de Animais Silvestres, onde constatou-se fratura exposta do membro torácico direito. Realizou-se tratamento suporte e amputação do membro afetado e no dia seguinte, o animal apresentou discreto ruído respiratório com sinais de dispneia, evoluindo para óbito em poucas horas, sendo então encaminhado para necropsia. No exame macroscópico, observou-se bom escore corporal, mucosas levemente pálidas, fígado apresentava manchas amareladas multifocais moderadas e não foram visualizadas alterações pulmonares. Entretanto, na avaliação histológica, observou-se uma pneumonia intersticial linfohistioplasmocitária difusa acentuada, além de áreas focalmente extensas de necrose e no lúmen de múltiplos capilares aéreos, notou-se acentuada quantidade de estruturas leveduriformes multifocais acentuadas, compatíveis com Candida albicans. Realizou-se a coloração de Ácido Periódico de Schiff, específica para fungos, onde obteve-se resultado positivo para as estruturas. Diante dos achados microscópicos, o diagnóstico corrobora com o quadro de pneumonia causada pela C. albicans. Ressalta-se a importância da avaliação necroscópica e histopatológica, além do uso de colorações especiais para correto diagnóstico de afecções respiratórias em aves silvestres. [ABSTRACT FROM AUTHOR]

Copyright of Archives of Veterinary Science is the property of Archives of Veterinary Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Archives of Veterinary Science is the property of Archives of Veterinary Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Veterinaria Brasilica is the property of Acta Veterinaria Brasilica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Veterinaria Brasilica is the property of Acta Veterinaria Brasilica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

An aneurysm is defined as a localized dilation of a blood vessel or heart. It may have either a congenital or an acquired origin and occurs in both humans and animals. Cardiac aneurysms are rare, and are characterized by sacculations of the cardiac wall. The present case report describes the macroscopic and microscopic findings of an aneurysm affecting both ventricles of the heart in a dog. A 7-year-old mixed-breed female dog with osteosarcoma on the left pelvic limb was euthanized and submitted to the veterinary pathology laboratory for necropsy. Macroscopically, besides the lesions in the link, the pericardial sac was adhered to the pericardial surface of the heart and there were two sacculations in both ventricles which communicated widely with the respective ventricle. Microscopically, fibrous tissue adhered to the pericardium, atrophy and necrosis of the cardiomyocytes with replacement by adipocytes were observed in addition to hyperplasia of the tunica media of arterioles and thrombosis. A diagnosis of acquired biventricular cardiac aneurysm was made based on the necropsy findings and microscopic lesions in the heart. We emphasize the importance of performing a necropsy and examining tissues histologically for the diagnosis of this rare condition. Ventricular aneurysms should be included in the differential diagnosis of cardiovascular disease in dogs. [ABSTRACT FROM AUTHOR]