Brazilian Journal of Veterinary Pathology
The purpose of the Brazilian Journal of Veterinary Pathology (BJVP), a peer-reviewed journal, is to publish original full papers, short communications, case reports, letters, reviews (by invited experts) and abstracts of scientific meetings. The preferable subjects is natural and experimental pathology. All the articles are submitted to scientific reviewers.
Histological heart lesions resembling myocardial dysplasia in a Guiana Dolphin (Sotalia guianensis) necropsied on the coast of Ceará, Brazil
Myocardial dysplasia, also known as arrhythmogenic right ventricular cardiomyopathy (ARVC), is a degenerative condition characterized by the progressive replacement of the myocardium by fibroadipose tissue, impairing cardiac electrical conduction and predisposing to arrhythmias and sudden death. Although well described in humans and in certain canine breeds, such as Boxers, it is rarely reported in veterinary medicine, especially in marine mammals. This study describes a case in a Guiana dolphin (Sotalia guianensis), stranded on the coast of Ceará, Brazil, which underwent necropsy and histopathological analysis, revealing replacement of myocardial tissue by adipose and fibroadipose tissue in the free wall of the right ventricle, with extension to the subendocardial region, without signs of myocarditis. Despite sampling limitations, the observed lesion pattern is consistent with ARVC-like changes and should be interpreted with caution in light of the possible occurrence of physiological lipomatosis in cetaceans, which has not yet been described in this species. These findings suggest that patterns similar to those observed in other species may occur in cetaceans, contributing to the understanding of cardiac diseases in this group and reinforcing the importance of detailed histopathological evaluation in stranded marine animals. Furthermore, the need for additional studies is highlighted, especially in regions under significant anthropogenic influence.
Copyright (c) 2026 Brazilian Journal of Veterinary Pathology https://creativecommons.org/licenses/by/4.0
Chronic exfoliative dermatitis in a German Shorthaired Pointer dog
History: A 5-year-old, spayed female, German Shorthaired Pointer dog presented to a veterinary clinic for a second opinion following a history of chronic dermatitis and suspected allergies. Clinical signs improved with prednisone, but there was no appreciable response with antibiotics or oclacitinib (Apoquel). Lesions initially developed on the chest and occasionally involved paw pads and lips.
Granulomatous hepatitis associated with plant material in a cat
History: A three-year-old, female, mixed-breed, FeLV-positive cat, with a history of suture dehiscence and evisceration following a previous ovariohysterectomy at an unspecified time, was presented with dyspnea, prostration, decreased level of consciousness, and abdominal distension, in addition to pleural and pericardial effusion. Cytological evaluation of the pleural fluid revealed high cellularity composed of neoplastic lymphoid cells. Thoracic radiographs demonstrated increased volume and opacity of the mediastinum, associated with dorsal tracheal displacement. Due to the presumptive diagnosis of lymphoma, the severity of the clinical signs, and the lack of response to supportive treatment, euthanasia was elected.
Follicular thyroid carcinoma in a domestic pigeon (Columba livia)
A 10-year-old female domestic pigeon (Columba livia), presented with marked depression, hyporexia, and scant green droppings for approximately two weeks, according to the owners. On general physical examination, a nodule was detected in the subcutaneous tissue at the level of the crop. Due to the bird´s poor prognosis, euthanasia was performed. At necropsy, an oval mass was found in the subcutaneous tissue of the ventral region of the distal third of the neck, located above the crop and adjacent to the trachea. The mass measured 3.5 x 2.2 x 1.5 cm, was light brown, had a slightly irregular and firm consistency, and on cut section showed small cavitations. The tissue was submitted to Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, UNAM, for histological evaluation, where it was diagnosed as follicular thyroid carcinoma. In birds, thyroid neoplasms have been reported as incidental findings and their prognosis is usually poor. Antemortem diagnosis is difficult because birds tend to show nonspecific clinical signs; therefore, in most cases, the definitive diagnosis is made postmortem. Although papillary thyroid adenomas have previously been reported in pigeons, the aim of the present study is to report the first case of follicular thyroid carcinoma in a domestic pigeon.
Mycoplasmosis infection with secondary heterophilic andnecrotizing blepharoconjunctivitis and sinusitis in a chicken
History: A 3-months-old male Belgian Bearded d’Uccle chicken was presented together with two other juvenile chickens for progressive ocular and respiratory disease. The birds had been previously treated with oxytetracycline and topical ophthalmic antibiotics, including Tricin® ointment and chloramphenicol eye drops, without clinical improvement. Clinical signs progressively worsened. At presentation, all birds exhibited ocular lesions. The Belgian d’Uccle chick showed bilateral periocular distension and deformation, with complete obscuration of the left eye. Respiratory effort was increased, with audible crackles consistent with air sac involvement. The oral cavity was malodorous. Feces were light brown and loose, and the bird was markedly emaciated. Two of the affected chickens, including the Belgian d’Uccle chick, were bred on the owner’s property from a newly introduced rooster. The third bird was an unrelated Showgirl cockerel purchased as a day-old chick that subsequently developed similar clinical signs.
History: 6-year-old, neutered male, goat was submitted for necropsy. Clinical history included 3 weeks of lameness following possible trauma which was gradually improving. The day prior to euthanasia this goat was acutely lethargic and anorexic. On physical exam, the goat was thin and weak. The animal was euthanized due to quality-of-life concerns.
Fibrous osseous dystrophy and early-onsetchronic kidney disease from renal dysplasia in a juvenile dog
History: A postmortem examination was performed on an 8-month-old, intact female crossbred dog that was humanely euthanized following an acute onset of vomiting, diarrhea, and lethargy. The animal had renal azotemia, chronic kidney disease and small stature.
History: A 5-year-old female spayed domestic shorthair initially presented to oncology services for a 4-month history of a subcutaneous mass on the right side of the mandible that extended into the mouth. The right eyeball had been previously enucleated one year prior due to an undisclosed reason. At presentation, the animal was having difficulty eating and breathing. Due to concerns for quality of life, humane euthanasia was elected.
Malignant catarrhal fever and Clostridium perfringens co-infection in White-Spotted Deer: a fatal encounter
Malignant Catarrhal Fever (MCF) is one of the diseases reported as a transboundary disease, which is commonly caused by Alcelaphine herpesvirus 1 (AlHV-1) and Ovine herpesvirus 2 (OvHV-2). Cervidae (Deer) are susceptible to this virus infection, with the outbreak occurring sporadically. A total of 5 out of 42 deer were presented with sudden death and weakness, with bloody diarrhea ranging from a few days to 24 hours before death. Gross and histopathological evaluations revealed severe haemorrhagic enteritis, pulmonary edema, and widespread necrotizing vasculitis observed in the lung, liver, and kidney. Diagnostic laboratory testing revealed a positive result of MCF (OvHV-2) virus from the lung samples through Polymerase chain reaction (PCR). Anaerobic culture, PCR and sequencing of the intestinal sample were positive for C. perfringens. Following the deaths of 2 deer, examination of the feed revealed an unplanned dietary transition from deer pellet to goat pellet with the differences in the protein content (min 14%) with mostly grains and higher moisture content (max 13%) in the goat pellet, leading to possible changes in the gastrointestinal flora of the deer gut which causes proliferation of C. perfringens. Presence of OvHV-2 targets the CD8+ lymphocytes that induce systemic inflammation, causing widespread vascular injury, which further promotes proliferation of C. perfringens that contributes to the severity of the enteritis observed. The resulting necrohaemorrhagic enteritis leads to hypovolemic shock, ultimately death due to circulatory failure. This report highlights the review, presents findings, transmission and pathology of Malignant Catarrhal Fever and C. perfringens in white spotted deer.
Carcinoma with medullary signs in mammary glands in cats: morphohistological study and immunohistochemical analysis
Breast carcinoma in cats is a serious oncological problem, especially considering that such tumors can cause metastasis to the lymph nodes and other organs. This article considers five cases of carcinoma with medullary signs in cats, of which two have metastases in regional lymph nodes. The morphohistological characteristics of tumors and the results of an immunohistochemical study using NCL and NPM1 markers are analyzed in detail.
Wildfire-related lesions in a free-ranging Paraguayan Hairy Dwarf Porcupine (Coendou spinosus) in Brazil
The impacts of wildfire smoke on the health and behavior of wildlife are largely unknown and a few studies have explicitly considered the impact of wildfire smoke inhalation on the health of wildlife. Veterinarians should be aware of how animals behave during forest fires and the lesions are most common in different groups of animals. We describe here the injuries found in a porcupine that was a victim of wildfire, in a State Park, after a balloon crash. Despite the care provided, the animal died. At necropsy, it showed singed fur, erythema on the skin, swollen lungs, and congestion in the kidney. Microscopic examination revealed pulmonary edema, carbon pigmentation in the alveoli, liver degeneration, acute tubular injury in the kidney, and cardiac hemorrhage. The cardiorespiratory lesions were the most significant finding and were associated with the cause of death. These findings are a warning sign, since rescue veterinarians are often concerned primarily with providing support for burns visible on physical examination, neglecting cardiorespiratory function and metabolic changes that may be present. Necropsy of an animal killed by a forest fire should always be encouraged, as it can help clarify the events that occurred, allows comparative pathology and develop intensive care protocols, reducing the loss of life.
Unilateral segmental aplasia of the epididymis and ductus deferens in a mixed-breed dog
A 9-month-old male mixed-breed dog was presented for elective bilateral orchiectomy. During the procedure, segmental aplasia of the tail of the right epididymis and absence of the corresponding ductus deferens were observed. Additionally, the head of the epididymis on the affected side appeared enlarged. Histopathological examination revealed multiple sperm granulomas with inflammatory infiltrate composed of macrophages, multinucleated giant cells, neutrophils, lymphocytes, and plasma cells, as well as fibrosis. The epididymal tail and ductus deferens were absent. These gross and microscopic findings supported a diagnosis of segmental aplasia of the epididymis and ductus deferens.
Neoplasia of glandular and blood vessel origin in Canis familiaris: diagnostic and therapeutic approach
Cutaneous neoplasms in dogs are common findings in routine veterinary practice, especially in older animals. Among these, adenoma and hemangioma stand out, both of benign nature but capable of causing discomfort and the risk of secondary complications. This paper reports the case of a 7-year-old mixed-breed male dog weighing 5 kg, which presented two distinct nodular formations: a subcutaneous lesion on the right dorsal region and another at the base of the tail. The first was identified as a hepatoid cell adenoma, and the second as a hemangioma, both confirmed by histopathological examination after surgical excision. The clinical case highlights the importance of early evaluation of skin masses, precise surgical management, and diagnostic differentiation between tumor types, in accordance with current veterinary oncology guidelines.
Fatal canine metaldehyde poisoning in Southern Brazil
Metaldehyde is commonly used as a molluscicide, and accidental ingestion in dogs is a recognized toxicologic emergency with potentially fatal outcomes. A 4-month-old female Pit Bull was presented to a veterinary emergency after ingesting an unknown amount of a 5% metaldehyde-based slug bait (Metarex®). Clinical signs began within minutes and included stupor, hypersalivation, and generalized tonic-clonic seizures. Supportive care was provided, including anesthetic coma with propofol and isoflurane, gastric lavage, diazepam, N-acetylcysteine, and oxygen therapy; however, the animal died in eight hours. At necropsy, the stomach and intestines contained abundant blue-to-green amorphous and finely granular material, as well as plastic fragments consistent with Metarex® packaging. No significant microscopic alterations were observed in internal organs. The diagnosis was based on the clinical course, history of exposure, and characteristic gastrointestinal contents. In suspected cases, identification of metaldehyde in the gastrointestinal tract can aid diagnosis when toxicologic confirmation is unavailable.
Anais do 6º Congresso Brasileiro de Patologia Veterinária (6º CBPV), XX Encontro Nacional de Patologia Veterinária (XX ENAPAVE) e XII Simpósio Brasileiro da Davis-Thompson Foundation
É com grande satisfação que apresentamos os Anais do 6º Congresso Brasileiro de Patologia Veterinária (6º CBPV), realizado conjuntamente com o XX Encontro Nacional de Patologia Veterinária (XX ENAPAVE) e o XII Simpósio Brasileiro da Davis-Thompson Foundation. Este importante evento científico ocorreu de forma totalmente remota, entre os dias 26 e 30 de julho de 2021, em um dos períodos mais desafiadores da história recente da humanidade, marcado pela pandemia da COVID-19. Mesmo diante das limitações impostas pelo distanciamento social e pelas incertezas daquele momento, o congresso demonstrou a força, a resiliência e o compromisso da comunidade científica da Patologia Veterinária com a produção e a disseminação do conhecimento. A realização do evento em formato virtual possibilitou ampla participação nacional e internacional, consolidando-se como um espaço plural de troca científica, atualização profissional e fortalecimento institucional da área. Esta edição do congresso contou com o maior número de palestrantes já registrado na história do CBPV, reunindo 67 especialistas provenientes de diferentes regiões do Brasil e de diversos países. Esses profissionais, mesmo vivenciando contextos locais igualmente desafiadores, aceitaram generosamente contribuir com o evento, compartilhando experiências, avanços científicos, abordagens diagnósticas e perspectivas futuras da Patologia Veterinária. Além das palestras, o evento recebeu um expressivo número de contribuições científicas, totalizando 301 resumos, apresentados na forma de pôsteres digitais, os quais estão reunidos nestes Anais. Os trabalhos refletem a diversidade temática, metodológica e institucional da área, abrangendo desde a patologia diagnóstica até estudos experimentais, patologia comparada, doenças infecciosas, patologia de animais de produção, de companhia e silvestres, entre outros temas relevantes. Os Anais do 6º CBPV representam, portanto, não apenas um registro científico do evento, mas também um testemunho do esforço coletivo de docentes, pesquisadores, estudantes e profissionais que, mesmo em um cenário adverso, mantiveram viva a produção científica e o compromisso com a excelência acadêmica. Que este material sirva como fonte de consulta, inspiração e fortalecimento contínuo da Patologia Veterinária no Brasil.
Supplement 2 - Anais do 6º Congresso Brasileiro de Patologia Veterinária (6º CBPV), XX Encontro Nacional de Patologia Veterinária (XX ENAPAVE) e XII Simpósio Brasileiro da Davis-Thompson Foundation
6º Congresso Brasileiro de Patologia Veterinária (6º CBPV)
XX Encontro Nacional de Patologia Veterinária (XX ENAPAVE)
XII Simpósio Brasileiro da Davis-Thompson Foundation
Copyright (c) 2025 Brazilian Journal of Veterinary Pathology https://creativecommons.org/licenses/by/4.0
Metastatic canine cutaneous clear cell adnexal carcinoma: case report
Canine cutaneous clear cell adnexal carcinoma (CCCCAC) is a rare primary cutaneous adnexal neoplasm. Microscopically, CCCCAC is characterized by dermal and/or subcutaneous lobules of pleomorphic polygonal to spindle-shaped cells with clear, glycogen-rich cytoplasm containing variably sized vacuoles with indistinct borders frequently associated with peripheral palisading, follicular papillary mesenchymal body–like structures, comedonecrosis, and lymphovascular invasion. Despite aggressive microscopic features, the biological behavior of CCCCAC in dogs remains poorly defined, and metastatic rates are likely underestimated. This report describes a metastatic case of CCCCAC in an 11-year-old mixed-breed, neutered male dog presenting with a cervical cutaneous mass and progressive pulmonary and lymph node metastases. Fine-needle aspiration cytology supported the diagnosis of a malignant epithelial neoplasm. Histopathology revealed a multilobulated, poorly demarcated, infiltrative neoplasm composed of clear cells with marked pleomorphism, high mitotic activity, comedonecrosis, and extensive lymphovascular invasion. Histochemical staining demonstrated cytoplasmic glycogen accumulation by periodic acid–Schiff positivity with diastase sensitivity. Immunohistochemically, neoplastic cells showed diffuse cytoplasmic immunoreactivity for pan-cytokeratin, variable expression of vimentin and S-100, and absence of melan-A, smooth muscle actin, and thyroid transcription factor-1 labeling, confirming the diagnosis of CCCCAC. Disease progression occurred despite supportive care, and necropsy revealed marked local aggressiveness and widespread metastases to lymph nodes, lungs, parietal pleura, and pancreas. To the authors’ knowledge, this is the first documented case of metastatic CCCCAC in Brazil.
Giant cutaneous horn associated with a dilated pore in a cat
This report aims to describe a rare case of a giant cutaneous horn in a domestic cat and its association with a dilated pore. A 6-year-old female domestic cat was presented to a veterinary clinic with a keratinized, horn-like lesion on the right lateral cheek. The cylindrical mass measured 9.5 cm in length, 1.5 cm in width, and 1.5 cm in thickness, and appeared firm, dark brown to black, and hyperkeratotic. Histopathological examination revealed a dermal cyst lined by well-differentiated squamous epithelium with a prominent granular layer, consistent with an infundibular origin. The cystic lumen contained compact, laminated, partially pigmented keratin, with focal areas of parakeratosis. The lesion was characterized by keratinocyte hyperplasia with extensive laminated parakeratotic hyperkeratosis. These findings led to the diagnosis of a dilated pore, a proliferative variant of the feline infundibular follicular cyst, associated with a giant cutaneous horn. This rare presentation not only provides insight into the pathogenesis and potential relationship between dilated pores and cutaneous horns in cats, but also expands the current understanding of their differential diagnoses, particularly in atypical locations such as the face.
Anais do 8º Congresso de Patologia Veterinária (CPV), XXII Encontro Nacional de Patologia Veterinária(ENAPAVE), XVI Simpósio Brasileiro da Davis-Thompson Foundation, VII Encontro Internacional de Saúde Animal e Prevenção (ENISAP) e I Simpósio de Sanidade Animal do CRMV-MT
É com grande satisfação que apresentamos os anais do 8º Congresso de Patologia Veterinária (CPV), do XXII Encontro Nacional de Patologia Veterinária (ENAPAVE), do XVI Simpósio Brasileiro da Davis-Thompson Foundation, do VII Encontro Internacional de Saúde Animal e Prevenção (ENISAP) e do I Simpósio de Sanidade Animal do CRMV-MT. Este magnífico evento ocorreu de 09 a 12 de setembro de 2025, no Centro de Eventos do Pantanal, em Cuiabá, Mato Grosso, Brasil. Estes eventos associados foram frutos de uma colaboração entre a Associação Brasileira de Patologia Veterinária (ABPV) e o Colégio Brasileiro de Patologia Animal (CBPA), contando com o valioso apoio da Davis-Thompson Foundation, da Universidade Federal do Mato Grosso, do Conselho Regional de Medicina Veterinária do Mato Grosso, além de grande número de patrocinadores, aos quais estendemos nossos sinceros agradecimentos. Após o sucesso do retorno à forma 100% presencial do Congresso de Patologia Veterinária (CPV) alcançado durante a sua sétima edição, em João Pessoa, em 2023, é com muito entusiasmo que venho como presidente da Associação Brasileira de Patologia Veterinária (ABPV), em nome da Diretoria 2024/2025, agradecer a todos pela massiva presença no 8º CPV, XXII ENAPAVE, em Cuiabá, Mato Grosso, Brasil. A região Centro Oeste carrega um forte laço com o precursor do CPV, nosso querido ENAPAVE. O primeiro ENAPAVE ocorreu em 1983, na Universidade Federal de Mato Grosso do Sul, em Campo Grande. Apesar do evento ter visitado nossa região em várias outras ocasiões: Campo grande 2001 e 2007, Goiânia 2011 e Brasília 2017, está foi a primeira vez que o CPV/ENAPAVE ocorreu na cidade de Cuiabá. Nossa cidade é reconhecida frequentemente como referência em altas temperaturas, mas mostramos, durante o evento, que nosso calor humano e acolhida é mais escaldante que as altas temperaturas de nossa cidade. O evento ocorreu entre os dias 09 e 12 de setembro de 2025, no Centro de Eventos do Pantanal, local climatizado e com ampla capacidade que pôde receber todos os congressistas e nossos parceiros com muito conforto e infraestrutura. Fico imensamente agradecido, pois em sua primeira edição em Cuiabá, o evento se tornou-se o maior ENAPAVE da história até este momento. Contamos com 26 palestrantes, 443 congressistas, além de 555 resumos em forma de pôster, 06 apresentações orais e 22 participações no fórum de lâminas. Os principais eixos temáticos abordados foram: Ensino em Patologia Veterinária, Patologia de animais de pequeno porte, Patologia de animais de grande porte e de produção, Patologia de animais exóticos e silvestres e Métodos de diagnóstico na patologia veterinária. As temáticas foram abordadas na forma de palestras e minicursos que foram ministrados por profissionais que realizam pesquisas na vanguarda do conhecimento. Dessa forma, o público participante teve a possibilidade de acessar informações sobre o que há de mais avançado, no tocante às inovações tecnológicas na patologia, possibilitando assim avanços na rotina de diagnóstico, ensino, pesquisa e extensão na área de patologia veterinária no país. O evento proporcionou interações pessoais, profissionais e científicas, ao propiciar um ambiente de network para troca de informações e construção de novos relacionamentos. Tivemos ainda, fazendo jus à fama de nossa cidade, uma “calorosa” programação social, destinada à confraternização de todos os participantes. Estamos felizes por atingir o sucesso pretendido e agradecemos a importante participação e confiança de todos os que, como nós, acreditam na educação técnico-científica como promotora de mudanças em prol da disseminação das melhores práticas em Patologia Veterinária. Nos vemos em Vitória-ES em 2027!!!
Supplement - Anais do 8º Congresso de Patologia Veterinária (CPV), XXII Encontro Nacional de Patologia Veterinária (ENAPAVE), XVI Simpósio Brasileiro da Davis-Thompson Foundation, VII Encontro Internacional de Saúde Animal e Prevenção (ENISAP) e I Simpósio de Sanidade Animal do CRMV-MT
8º Congresso de Patologia Veterinária (CPV)
XXII Encontro Nacional de Patologia Veterinária (ENAPAVE)
XVI Simpósio Brasileiro da Davis-Thompson Foundation
VII Encontro Internacional de Saúde Animal e Prevenção (ENISAP)
I Simpósio de Sanidade Animal do CRMV-MT
Pulmonary vascular amyloidosis in an aged dog
History: The carcass of a 14-year-old, female Boston Terrier was submitted for necropsy. The clinical history for the last year was dominated by recurrent and progressive episodes of dyspnea, stertor, and tachypnea. The patient had a prior history of a grade 3 cutaneous mast cell tumor that was excised years ago. Clinical investigations during the dog’s life included thoracic radiographs, which revealed a mild patchy interstitial pattern and tracheal collapse. The owner declined blood analysis and other diagnostics on several occasions due to financial constraints. The final episode was characterized by a severe respiratory crisis with oxygen saturation below 90%. Given the poor prognosis and the animal’s deteriorating condition, humane euthanasia was performed.
Fibrinosuppurative valvular endocarditis withmyxomatous valvular degeneration in a mare
Clinical History: A 12-year-old Azteca mare died unexpectedly with no premonitory clinical signs being observed.
History: A 10-year-old male neutered Golden Retriever dog presented for seizures and a tendency for clockwise circling. A large extra-axial homogenously contrast-enhancing mass was seen with magnetic resonance imaging in the right frontal lobe/olfactory bulb area extending into the nasal cavity. A transfrontal craniotomy with debulking was performed with cytological touch impressions and biopsy. Acute-onset focal seizures and episodes of compulsive circling started around 1 month following surgery, with regrowth of the extra-axial mass with secondary perilesional edema on imaging. Euthanasia was elected.
Acute colic secondary to sand enteropathy (sablosis) in a horse
History: A 24–year-old Stockhorse gelding presented for veterinary assessment after developing profuse watery diarrhea. The horse presented with a distended abdomen, decreased gut sounds on both quadrants on the left-hand side, absent gut sounds on the right-hand side and was hypothermic (36.8°C) with a heart rate of 44 bpm. The horse was drenched with water, paraffin oil and electrolytes via a nasogastric tube. No net reflux was obtained. Despite the administration of pain relief and sedation, the gelding’s heart rate continued to increase to 68 bpm. The gelding was transported to a referral service but died upon arrival.
History One hundred and fifty 5-month-old crossbred rabbits raised for meat production were examined at a slaughterhouse. No abnormalities were observed during ante-mortem inspection.
Uremic gastritis and calcium oxalate crystallization in a dog
Clinical History: A 7-year-old female intact Welsh Corgi mix was presented to emergency services for vomiting, diarrhea, inappetence, and lethargy. Over the last 24 to 48 hours, she vomited approximately 5 to 6 times a day.
Xanthogranulomatosis in an eclectus parrot
History: A 14-year-old female eclectus parrot was submitted for necropsy with a history of abdominal distension and weight gain,
Clinical History: A placenta from a mare following parturition was submitted for evaluation. The foal was reported to be unusually weak at birth but otherwise grossly normal with no clinical abnormalities. The mare was treated with antibiotics prior to parturition.
Parvovirosis in a margay (Leopardus wiedii)
Clinical History: Multiple tissue samples from various organs of a juvenile margay (Leopardus wiedii) were collected during necropsy. Before death, the animal exhibited severe weakness, vomiting, diarrhea, dehydration, abdominal discomfort, and marked leukopenia.
History: Nine, adult, female Boer goats were presented to the University of California, Davis, Veterinary Medical Teaching Hospital for timed artificial insemination. To synchronize their estrous cycles, the owner gave each doe 7.5 mg dinoprost tromethamine (Lutalyse®) intramuscularly 12 hours prior to presentation and 24 hours prior to removal of the doe’s progesterone controlled intravaginal drug release device (EAZI-BREED™ CIDR®). Approximately 52 hours after prostaglandin administration, one of the does delivered two live kids, one female and one male, without complication. The neonates were unexpectedly premature by approximately two weeks. Both kids exhibited bilateral, smooth swelling at the laryngotracheal junction and generalized alopecia. Both kids were euthanized, and they were sent to the UC Davis Anatomic Pathology Service for necropsy.
Ultimobranchial body cyst in a neonatal goat
History and clinical signs: A two-day-old black and white pygmy goat kid was presented to the California Animal Health and Food Safety Laboratory – San Bernardino Branch, for euthanasia and necropsy with a history of what appeared to be a fluctuant mass under the skin of the ventral side of the neck. On clinical examination, an approximately 10 cm in diameter, fluid-filled structure was palpated under the skin along the ventral aspect of the neck (Fig 1). The goat kid had pronounced dyspnea and distress particularly during palpation. Euthanasia was performed with an overdose of barbiturate and a full necropsy was performed.
Strangles and infarctive purpura hemorrhagica in a horse
History: A euthanized 23-year-old Quarter Horse gelding with an ~1-week history of fever (102.5°F), clear nasal discharge and lymphadenopathy was euthanized.