Metastatic vulvar squamous cell carcinoma in a mare

Background: Squamous cell carcinoma (SCC) is a common cutaneous neoplasm in horses, which mainly affects the external genitalia, oral cavity, and periocular region. The development of SCC metastases is rare in these animals, and the most common occurrence is a marked local infiltration. Exposure to ultraviolet rays and skin depigmentation are the main etiological factors of SCC. Definitive diagnosis of the neoplasm is performed through histological examination of lesions. The present report describes the clinical, anatomopathological, and immunohistochemical (IHC) aspects of a case of metastatic SCC, with the vulva as the primary site in a mare. Case: A 17-year-old mare, mixed breed, was referred to the Veterinary Hospital of the Universidade de Passo Fundo (UPF), with history of areas of depigmented skin (pinto coat), and clinical history of anorexia, frequent episodes of colic, and recumbency. During clinical evaluation, heart rate (68 bpm), rectal temperature (38.4ºC), and respiratory rate (48 mpm) were elevated, and the oral mucosa was pale. The mare also had an ulcerated tumor mass involving the vulva, which extended to the inguinal region and involved the mammary gland. A cytological aspirate of the vulvar tumor was performed, in which no neoplastic cells were found. Next, a biopsy of 2 distinct areas of the vulva was performed. The material was sent for anatomopathological examination, which showed markedly pleomorphic malignant squamous cells, with individual keratinization and high mitotic index, organized in trabeculae with rare keratin pearl-like formations. The exam allowed the diagnosis of SCC Grade II. Due to the poor prognosis and high cost of treatment, the owner consented to euthanasia and necropsy examination. During necropsy, the vulvar tumor mass was grayish, firm to hard, infiltrative, and had friable areas. Tumor foci suggestive of metastasis were also observed in inguinal, mesenteric, mediastinal and renal lymph nodes, adrenal glands, lung, pericardium, medullary canal, intercostal muscles, right 15th rib, and tissue surrounding the azygos vein. Samples from all organs were collected for anatomopathological examination. Diagnosis of metastatic vulvar SCC was confirmed through histological and IHC studies, which evaluated the expression of cytokeratins (AE1/ AE3), as well as the proliferative activity of neoplastic cells through the PCNA marker. Discussion: The diagnosis of metastatic SCC was obtained through the observed clinical, necroscopic, histological, and IHC characteristics. This neoplasm usually appears in depigmented regions exposed to ultraviolet light, and older animals are more likely to be affected. The mare in the present case had areas of depigmented skin (pinto coat). The animal was kept in a paddock outdoor and exposed to constant solar radiation. Although rare in horses, manifestation of anorexia, progressive weight loss, and frequent colic episodes and recumbency may be closely related to the multiple sites of metastasis in the present case. The main histological findings of the neoplasm were the dense proliferation of malignant squamous cells with individual keratinization, arranged in a trabecular pattern and with rare formations of keratin pearls, in line with previous studies. During IHC evaluation, the neoplastic cells showed expression of cytokeratins (AE1/AE3), as well as high proliferative activity evidenced by the PCNA marker. Given this background, the present report describes the clinical, anatomopathological, and IHC aspects of a case of metastatic SCC with a primary site in the vulva of a mare.

Poisoning by Senecio brasiliensis in horses in northern Rio Grande do Sul

Background: In various regions of Brazil, horses and cattle are considered the most susceptible animals to plant poisoning. The plants of the genus Senecio are the most important in Rio Grande do Sul because they have the active principleknown as the pyrrolizidine alkaloid. Its diagnosis is made through epidemiology, clinical signs and histopathologicalanalysis, either of the tissues obtained by biopsy or necropsy. The objective of this study was to report and characterizethe epidemiological, clinical and anatomopathological findings of three cases of natural poisoning by Senecio brasiliensisin horses assisted at the Hospital Veterinário (HV) of the Universidade de Passo Fundo (UPF).Cases: Three traction horses, two males and one female, were admitted at the HV-UPF for clinical care. The animals werepresenting anorexia, weight loss, dysmetria, proprioceptive deficit and signs suggestive of colic. The epidemiological studyrevealed that the sites where these animals were located were infested by Senecio brasiliensis. The support therapy usedfor equine colic in all three cases was unsuccessful. One of the animals died and the other two were euthanized, all threeof them being reffered for necropsy. The post-mortem findings were mainly found in the liver, which showed accentuationof the lobular pattern and the appearance of nutmeg. During necropsy, fragments of organs from thoracic and abdominalcavities and central nervous system were collected and fixed in 10% buffered formalin. Subsequently, the samples wereprocessed chemically, submitted to cuts of five micrometers of thickness and stained with hematoxylin and eosin for microscopic analysis. Microscopically, the liver of all three horses presented megalocytosis, fibrosis and bile ducts hyperplasia.In the central nervous system, spongiosis and the presence of Alzheimer type II astrocytes were observed. Thus, throughthe association of information, the diagnosis of...(AU)

Objective evaluation versus subjective evaluation of flexion tests in the pelvic limb of horses / Avaliação objetiva versus avaliação subjetiva dos testes de flexão no membro pélvico de cavalos

The agreement between subjective and objective evaluation methods was studied to identify claudication in the pelvic limbs of horses before and after flexion tests were performed. Twenty-nine horses were equipped with a wireless system of inertial sensors and evaluated during seven times while trotting. Videos were recorded to be evaluated by three veterinarians, with different levels of experience, to evaluate the agreement between the two different methods and between the evaluators. The evaluators and the objective evaluation had a low rate of agreement, with the exception of moderate agreement between the objective evaluation and evaluator 1 to identify lameness after the left total flexion and moderate agreement in evaluating the response to the tests, between objective evaluation and evaluator 2, after right distal flexion. This shows that there was a low agreement among the evaluators and between them and the objective evaluation for identifying lameness, measuring the degree of lameness and the response to the flexion tests.(AU)

A concordância entre métodos de avaliação subjetiva e objetiva foi estudada para identificar claudicação nos membros pélvicos antes e após a realização dos testes de flexão. Vinte e nove cavalos foram equipados com um sistema de sensores inerciais sem fio e avaliados durante sete momentos enquanto troteavam. Vídeos foram gravados para serem avaliados por três veterinários com diferentes níveis de experiência, a fim de avaliar a concordância entre os dois métodos diferentes e entre os avaliadores. Os avaliadores e a avaliação objetiva tiveram uma baixa taxa de concordância, com exceção de uma moderada concordância entre avaliação objetiva e avaliador 1 para identificar claudicação após o teste de flexão total esquerdo e uma moderada concordância na avaliação da resposta aos testes, entre avaliação objetiva e avaliador 2, após o teste de flexão distal direito. Isso demonstra que houve uma baixa concordância entre os avaliadores e entre estes e a avaliação objetiva para identificação da claudicação, mensuração do grau de claudicação e resposta aos testes de flexão.(AU)

Poisoning by Senecio brasiliensis in horses in northern Rio Grande do Sul

Background: In various regions of Brazil, horses and cattle are considered the most susceptible animals to plant poisoning. The plants of the genus Senecio are the most important in Rio Grande do Sul because they have the active principleknown as the pyrrolizidine alkaloid. Its diagnosis is made through epidemiology, clinical signs and histopathologicalanalysis, either of the tissues obtained by biopsy or necropsy. The objective of this study was to report and characterizethe epidemiological, clinical and anatomopathological findings of three cases of natural poisoning by Senecio brasiliensisin horses assisted at the Hospital Veterinário (HV) of the Universidade de Passo Fundo (UPF).Cases: Three traction horses, two males and one female, were admitted at the HV-UPF for clinical care. The animals werepresenting anorexia, weight loss, dysmetria, proprioceptive deficit and signs suggestive of colic. The epidemiological studyrevealed that the sites where these animals were located were infested by Senecio brasiliensis. The support therapy usedfor equine colic in all three cases was unsuccessful. One of the animals died and the other two were euthanized, all threeof them being reffered for necropsy. The post-mortem findings were mainly found in the liver, which showed accentuationof the lobular pattern and the appearance of nutmeg. During necropsy, fragments of organs from thoracic and abdominalcavities and central nervous system were collected and fixed in 10% buffered formalin. Subsequently, the samples wereprocessed chemically, submitted to cuts of five micrometers of thickness and stained with hematoxylin and eosin for microscopic analysis. Microscopically, the liver of all three horses presented megalocytosis, fibrosis and bile ducts hyperplasia.In the central nervous system, spongiosis and the presence of Alzheimer type II astrocytes were observed. Thus, throughthe association of information, the diagnosis of...

Objective evaluation versus subjective evaluation of flexion tests in the pelvic limb of horses / Avaliação objetiva versus avaliação subjetiva dos testes de flexão no membro pélvico de cavalos

The agreement between subjective and objective evaluation methods was studied to identify claudication in the pelvic limbs of horses before and after flexion tests were performed. Twenty-nine horses were equipped with a wireless system of inertial sensors and evaluated during seven times while trotting. Videos were recorded to be evaluated by three veterinarians, with different levels of experience, to evaluate the agreement between the two different methods and between the evaluators. The evaluators and the objective evaluation had a low rate of agreement, with the exception of moderate agreement between the objective evaluation and evaluator 1 to identify lameness after the left total flexion and moderate agreement in evaluating the response to the tests, between objective evaluation and evaluator 2, after right distal flexion. This shows that there was a low agreement among the evaluators and between them and the objective evaluation for identifying lameness, measuring the degree of lameness and the response to the flexion tests.(AU)

A concordância entre métodos de avaliação subjetiva e objetiva foi estudada para identificar claudicação nos membros pélvicos antes e após a realização dos testes de flexão. Vinte e nove cavalos foram equipados com um sistema de sensores inerciais sem fio e avaliados durante sete momentos enquanto troteavam. Vídeos foram gravados para serem avaliados por três veterinários com diferentes níveis de experiência, a fim de avaliar a concordância entre os dois métodos diferentes e entre os avaliadores. Os avaliadores e a avaliação objetiva tiveram uma baixa taxa de concordância, com exceção de uma moderada concordância entre avaliação objetiva e avaliador 1 para identificar claudicação após o teste de flexão total esquerdo e uma moderada concordância na avaliação da resposta aos testes, entre avaliação objetiva e avaliador 2, após o teste de flexão distal direito. Isso demonstra que houve uma baixa concordância entre os avaliadores e entre estes e a avaliação objetiva para identificação da claudicação, mensuração do grau de claudicação e resposta aos testes de flexão.(AU)

Objective evaluation versus subjective evaluation of flexion tests in the pelvic limb of horses / Avaliação objetiva versus avaliação subjetiva dos testes de flexão no membro pélvico de cavalos

The agreement between subjective and objective evaluation methods was studied to identify claudication in the pelvic limbs of horses before and after flexion tests were performed. Twenty-nine horses were equipped with a wireless system of inertial sensors and evaluated during seven times while trotting. Videos were recorded to be evaluated by three veterinarians, with different levels of experience, to evaluate the agreement between the two different methods and between the evaluators. The evaluators and the objective evaluation had a low rate of agreement, with the exception of moderate agreement between the objective evaluation and evaluator 1 to identify lameness after the left total flexion and moderate agreement in evaluating the response to the tests, between objective evaluation and evaluator 2, after rightdistal flexion. This shows that there was a low agreement among the evaluators and between them and the objective evaluation for identifying lameness, measuring the degree of lameness and the response to the flexion tests.

A concordância entre métodos de avaliação subjetiva e objetiva foi estudada para identificar claudicação nos membros pélvicos antes e após a realização dos testes de flexão. Vinte e nove cavalos foram equipados com um sistema de sensores inerciais sem fio e avaliados durante sete momentos enquanto troteavam. Vídeos foram gravados para serem avaliados por três veterinários com diferentes níveis de experiência, a fim de avaliar a concordância entre os dois métodos diferentes e entre os avaliadores. Os avaliadores e a avaliação objetiva tiveram uma baixa taxa de concordância, com exceção de uma moderada concordância entre avaliação objetiva e avaliador 1 para identificar claudicação após o teste de flexão total esquerdo e uma moderada concordância na avaliação da resposta aos testes, entre avaliação objetiva e avaliador 2, apóso teste de flexão distal direito. Isso demonstra que houve uma baixa concordância entre os avaliadores e entre estes e a avaliação objetiva para identificação da claudicação, mensuração do grau de claudicação e resposta aos testes de flexão.

Anesthetic recovery assisted by rope at three points in horses / Recuperação anestésica assistida por corda em três pontos em equinos

This study evaluated the quality of anesthesyc recovery of horses using a three-point assisted method. Sixty-eight horses (37 females and 31 males) of different breeds, age and weight submitted to general anesthesia for abdominal - ABD (n=15), arthroscopy - ART (n=17), other orthopedic - ORT (n=18) and miscellaneous - MIX (n=18) surgical procedures. Isoflurane resulted in shorter recovery time (67.4±25.7min) compared to halothane (88.0±37.8min). The mean duration (±SD) of anesthesia for ABD, ORT, ART and MIXgroups was 166.7 (±14), 54.9 (±5.9), 86.5 (±7.3) and 76.4 (±32.5) minutes (min) respectively. Quality of recovery wasnt influenced by duration of anesthesia or by use of analgesic, sedative and/or anesthetic drugs or not (p>0.05). Mean standing time (TEst) during anesthetic recovery was 67.5 (±29.9) min in ABD, 44.4 (±27) min in ORT, 42.2 (±23.2) min in ART and 39 (±14.7) min in MIX group. Average number of attempts (Ast) to stand was 1.8 (±0.8) in ABD group, 3.1 (±4.7) in ORT, 1.8 (±1.2) in ART and 1.8 (±1.2) in MIX. Recovery time (TRec) in ABD group was 102.2 (±36.5) min, ORT 70.1 (±36.5) min, ART 72.2 (±24.8) min and MIX group 66.6 (±19.1) min. TRec differed (p<0.05) between ABDand other groups. Three-point assisted recoveryfrom anesthesia showed to be a safe procedure during horses recovery. This method is easy to apply and well tolerated by horses regardless of the surgical procedure.(AU)

Neste estudo foi avaliado a qualidade da recuperação anestésica de equinos através do método de recuperação assistida por três pontos. Sessenta e oito cavalos (37 fêmeas e 31 machos) de diferentes raças, idade e peso foram submetidos à anestesia geral para cirurgias abdominais - ABD (n=15), artroscopias - ART (n=17), demais cirurgias ortopédicas - ORT (n=18) e mistas - MIX (n=18). As anestesias realizadas com isofluorano resultaram em menor tempo de recuperação (67.4±25.7min), comparadas com as anestesias realizadas com halotano (88.0±37.8min). A média da duração (±SD) da anestesia nos grupos ABD, ORT, ART e MIX foi de 166.7 (±14), 54.9 (±5.9), 86.5 (±7.3) e 76.4 (±32.5) minutos (min) respectivamente. A qualidade da recuperação não foi influenciada pelo tempo de anestesia ou pelo uso de analgésicos, sedativos e/ou outras drogas anestésicas (p>0.05). A média do tempo para estação (TEst) durante a recuperação anestésica foi de 67.5 (±29.9) min em ABD, 44.4 (±27) min em ORT, 42.2 (±23.2) min em ART e 39 (±14.7) min em MIX. O tempo de recuperação (TRec) em ABD foi de 102.2 (±36.5) min, ORT 70.1 (±36.5) min, ART 72.2 (±24.8) min e MIX 66.6 (±19.1) min. O TRec diferiu (p<0.05) entre o grupo de cirurgias ABD e os demais. O método de recuperação anestésica por três pontos mostrou ser seguro em cavalos, sendo facilmente aplicável e bem tolerado por cavalos após diferentes procedimentos cirúrgicos.(AU)

Anesthetic recovery assisted by rope at three points in horses / Recuperação anestésica assistida por corda em três pontos em equinos

ABSTRACT: This study evaluated the quality of anesthesyc recovery of horses using a three-point assisted method. Sixty-eight horses (37 females and 31 males) of different breeds, age and weight submitted to general anesthesia for abdominal - ABD (n=15), arthroscopy - ART (n=17), other orthopedic - ORT (n=18) and miscellaneous - MIX (n=18) surgical procedures. Isoflurane resulted in shorter recovery time (67.4±25.7min) compared to halothane (88.0±37.8min). The mean duration (±SD) of anesthesia for ABD, ORT, ART and MIXgroups was 166.7 (±14), 54.9 (±5.9), 86.5 (±7.3) and 76.4 (±32.5) minutes (min) respectively. Quality of recovery wasn't influenced by duration of anesthesia or by use of analgesic, sedative and/or anesthetic drugs or not (p>0.05). Mean standing time (TEst) during anesthetic recovery was 67.5 (±29.9) min in ABD, 44.4 (±27) min in ORT, 42.2 (±23.2) min in ART and 39 (±14.7) min in MIX group. Average number of attempts (Ast) to stand was 1.8 (±0.8) in ABD group, 3.1 (±4.7) in ORT, 1.8 (±1.2) in ART and 1.8 (±1.2) in MIX. Recovery time (TRec) in ABD group was 102.2 (±36.5) min, ORT 70.1 (±36.5) min, ART 72.2 (±24.8) min and MIX group 66.6 (±19.1) min. TRec differed (p<0.05) between ABDand other groups. Three-point assisted recoveryfrom anesthesia showed to be a safe procedure during horses' recovery. This method is easy to apply and well tolerated by horses regardless of the surgical procedure.

RESUMO: Neste estudo foi avaliado a qualidade da recuperação anestésica de equinos através do método de recuperação assistida por três pontos. Sessenta e oito cavalos (37 fêmeas e 31 machos) de diferentes raças, idade e peso foram submetidos à anestesia geral para cirurgias abdominais - ABD (n=15), artroscopias - ART (n=17), demais cirurgias ortopédicas - ORT (n=18) e mistas - MIX (n=18). As anestesias realizadas com isofluorano resultaram em menor tempo de recuperação (67.4±25.7min), comparadas com as anestesias realizadas com halotano (88.0±37.8min). A média da duração (±SD) da anestesia nos grupos ABD, ORT, ART e MIX foi de 166.7 (±14), 54.9 (±5.9), 86.5 (±7.3) e 76.4 (±32.5) minutos (min) respectivamente. A qualidade da recuperação não foi influenciada pelo tempo de anestesia ou pelo uso de analgésicos, sedativos e/ou outras drogas anestésicas (p>0.05). A média do tempo para estação (TEst) durante a recuperação anestésica foi de 67.5 (±29.9) min em ABD, 44.4 (±27) min em ORT, 42.2 (±23.2) min em ART e 39 (±14.7) min em MIX. O tempo de recuperação (TRec) em ABD foi de 102.2 (±36.5) min, ORT 70.1 (±36.5) min, ART 72.2 (±24.8) min e MIX 66.6 (±19.1) min. O TRec diferiu (p<0.05) entre o grupo de cirurgias ABD e os demais. O método de recuperação anestésica por três pontos mostrou ser seguro em cavalos, sendo facilmente aplicável e bem tolerado por cavalos após diferentes procedimentos cirúrgicos.

Uroperitônio em três potros Puro Sangue de corrida / Uroperitoneum in three Thoroughbred toets / Uroperitoneo en tres potros Pura Sangre de Carrera

São descritos três casos de uroperitônio em duas potrancas e um potro Puro Sangue de Corrida de 12, 20 e 8 dias de idade, respectivamente. Os animais apresentavam sinais de dor abdominal leve à moderada, taquipneia,taquicardia, distensão abdominal e disúria. O diagnóstico de uroperitônio foi realizado por meio de ultrassonografia transabdominal onde se observou a presença de imagens ecográficas sugestivas de alças intestinais flutuando em grande quantidade de líquido hipoecoico; e confirmado pela relação creatinina do líquido abdominal: creatininas é rica acima de dois. Primeiramente os potros foram submetidos à fluido terapia intravenosa associada à drenagem progressiva do líquido peritoneal para posterior celiotomia exploratória com o objetivo de localizar e reparar a lesão.Na potranca de 20 dias e no potro de 8 dias foi identificada uma ruptura de úraco. Na potranca de 12 dias, foi constatado um defeito congênito na parede dorsal da bexiga que foi reparado após leve debridamento dos bordos da lesão. Nos três casos foi efetuada a ressecção do úraco, veia e artérias umbilicais e posterior cistorrexia. Os animais de 20, 8 e 12 dias de idade apresentaram uma melhora rápida e sem complicações após a correção cirúrgica,recebendo alta aos nove, sete e 23 dias após a intervenção, respectivamente.(AU)

Three cases of uroperitoneum in Thorough bred foals, two females and one male, are described in the present study. The animais showed clinical sings of mild to moderate abdominal pain, tachycardia, tachypnea,abdominal distention and straining to urinate. The diagnosis of uroperitoneum was made by transabdominal ultrasound examination and confirmed by the ratio of [abdominal fluid creatinine] : [serum creatinine] greater than two. Initially the foals were treated with intravenous fluid therapy associated with progressive drainage of peritoneal fluid forsubsequent exploratory laparotomy in order to identify and repair the lesion. A ruptured urachus was identified in the20-day-old filly and in the 8-day-old colt. The 12-day-old filly had a congenital defect in the dorsal aspect of thebladder; this defect was repaired after debridement of the lesion edges. The resection of urachus, umbilical vein andarteries was pertormed in ali three cases followed by cistorrhaphy. The outcome was good without complications aftersurgical correction; the 20-day old filly , 8-day-old colt and the 12-day-old filly were discharged at 9,7 and 23 daysafter surgery, respectively.(AU)

Tres casos de uroperitoneo son descriptos, respectivamente, en dos potrancas y un potro Pura Sangrede Carrera de 12, 20 Y 8 días de edad. Los animales presentaban senales de dolor abdominal discreta a moderada,taquipnea, taquicardia, distensión abdominal y disuria. EI diagnóstico de uroperitoneo fue realizado por medio de ultrasonografía transabdominal, donde fueron observadas vueltas intestinales fluctuando en gran cantidad de líquido hipoecogénico; fue confirmado por Ia relación creatinina dei líquido abdominal: creatinina sé rica arriba de 2. Primeramente los productos fueron sometidos a Ia fluidoterápia intravenosa asociada a un drenaje progresivo deilíquido peritoneal para una posterior quirurgia abdominal exploratoria con el objetivo de localizar y reparar Ia lesión.En Ia potranca de 20 días y en el potro de 8 días fue identificada una ruptura de uraco. En Ia potranca de 12 días fue constatada una alteración congénita en Ia pared vesical dorsal que fue reparada después de un desbridamiento delos bordos de Ia lesión. En los 3 casos fue efectuada Ia resección dei uraco, de Ias venas y arterias umbilicales e unaposterior cistorrafia. Los 3 animales de 20, 8 Y 12 días de edad presentaron una rápida mejora sin complicaciones después de Ia corrección quirúrgica, y recibieron alta 9, 7 Y 23 días después.(AU)

Uroperitônio em três potros Puro Sangue de corrida / Uroperitoneum in three Thoroughbred toets / Uroperitoneo en tres potros Pura Sangre de Carrera

São descritos três casos de uroperitônio em duas potrancas e um potro Puro Sangue de Corrida de 12, 20 e 8 dias de idade, respectivamente. Os animais apresentavam sinais de dor abdominal leve à moderada, taquipneia,taquicardia, distensão abdominal e disúria. O diagnóstico de uroperitônio foi realizado por meio de ultrassonografia transabdominal onde se observou a presença de imagens ecográficas sugestivas de alças intestinais flutuando em grande quantidade de líquido hipoecoico; e confirmado pela relação creatinina do líquido abdominal: creatininas é rica acima de dois. Primeiramente os potros foram submetidos à fluido terapia intravenosa associada à drenagem progressiva do líquido peritoneal para posterior celiotomia exploratória com o objetivo de localizar e reparar a lesão.Na potranca de 20 dias e no potro de 8 dias foi identificada uma ruptura de úraco. Na potranca de 12 dias, foi constatado um defeito congênito na parede dorsal da bexiga que foi reparado após leve debridamento dos bordos da lesão. Nos três casos foi efetuada a ressecção do úraco, veia e artérias umbilicais e posterior cistorrexia. Os animais de 20, 8 e 12 dias de idade apresentaram uma melhora rápida e sem complicações após a correção cirúrgica,recebendo alta aos nove, sete e 23 dias após a intervenção, respectivamente.

Three cases of uroperitoneum in Thorough bred foals, two females and one male, are described in the present study. The animais showed clinical sings of mild to moderate abdominal pain, tachycardia, tachypnea,abdominal distention and straining to urinate. The diagnosis of uroperitoneum was made by transabdominal ultrasound examination and confirmed by the ratio of [abdominal fluid creatinine] : [serum creatinine] greater than two. Initially the foals were treated with intravenous fluid therapy associated with progressive drainage of peritoneal fluid forsubsequent exploratory laparotomy in order to identify and repair the lesion. A ruptured urachus was identified in the20-day-old filly and in the 8-day-old colt. The 12-day-old filly had a congenital defect in the dorsal aspect of thebladder; this defect was repaired after debridement of the lesion edges. The resection of urachus, umbilical vein andarteries was pertormed in ali three cases followed by cistorrhaphy. The outcome was good without complications aftersurgical correction; the 20-day old filly , 8-day-old colt and the 12-day-old filly were discharged at 9,7 and 23 daysafter surgery, respectively.

Tres casos de uroperitoneo son descriptos, respectivamente, en dos potrancas y un potro Pura Sangrede Carrera de 12, 20 Y 8 días de edad. Los animales presentaban senales de dolor abdominal discreta a moderada,taquipnea, taquicardia, distensión abdominal y disuria. EI diagnóstico de uroperitoneo fue realizado por medio de ultrasonografía transabdominal, donde fueron observadas vueltas intestinales fluctuando en gran cantidad de líquido hipoecogénico; fue confirmado por Ia relación creatinina dei líquido abdominal: creatinina sé rica arriba de 2. Primeramente los productos fueron sometidos a Ia fluidoterápia intravenosa asociada a un drenaje progresivo deilíquido peritoneal para una posterior quirurgia abdominal exploratoria con el objetivo de localizar y reparar Ia lesión.En Ia potranca de 20 días y en el potro de 8 días fue identificada una ruptura de uraco. En Ia potranca de 12 días fue constatada una alteración congénita en Ia pared vesical dorsal que fue reparada después de un desbridamiento delos bordos de Ia lesión. En los 3 casos fue efectuada Ia resección dei uraco, de Ias venas y arterias umbilicales e unaposterior cistorrafia. Los 3 animales de 20, 8 Y 12 días de edad presentaron una rápida mejora sin complicaciones después de Ia corrección quirúrgica, y recibieron alta 9, 7 Y 23 días después.