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Pathological findings and patterns of feline infectious peritonitis in the respiratory tract of cats J. Comp. Pathol. (IF 0.8) Pub Date : 2024-03-12 Mônica Slaviero, Fernanda G. Cony, Rodrygo C. da Silva, Cíntia De Lorenzo, Bruno A. de Almeida, Marianna Bertolini, David Driemeier, Saulo P. Pavarini, Luciana Sonne
Feline infectious peritonitis (FIP) is an important cause of death in cats. Thoracic manifestations are less common than abdominal manifestations, and FIP-associated respiratory disease is poorly documented. This study aimed to investigate pathological findings in the respiratory tract of cats with FIP and the occurrence and distribution of feline coronavirus antigen in the respiratory tract using
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Isolation of the entomopathogenic fungus Beauveria bassiana from a skin lesion in a wild Nikolsky's viper (Vipera berus nikolskii) J. Comp. Pathol. (IF 0.8) Pub Date : 2024-03-07 Oleksandra Klynova, Oleksandr Zinenko
Mycotic lesions of the skin of snakes are often associated with the fungus , but other pathogens can cause similar signs. A skin sample from a wild Nikolsky's viper () with dermal lesions was collected in eastern Ukraine. A pure fungal culture was obtained and identified using nucleotide sequence analysis as the entomopathogenic species . Although spp are considered to be non-pathogenic in vertebrates
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Prostatic stromal tumour of uncertain malignant potential in a dog J. Comp. Pathol. (IF 0.8) Pub Date : 2024-03-07 Tomokazu Nagashima, Masanori Kobayashi, Yoshiaki Kubo, Katsuya Nagaho, Kayoko Sugibayashi, Takahiro Saito, Yukino Machida, Masaki Michishita
An 11-year-old male Miniature Dachshund dog was presented with dyschezia. Computed tomography examination 35 days after the initial visit revealed a prostate mass (4.0 × 3.5 × 2.7 cm) and prostatectomy and orchiectomy were performed 13 days later. Grossly, the prostate was rubbery and the cut surface of the mass was swollen. The mass was whitish and demarcated from the surrounding tissues. Microscopically
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Spindle cell cutaneous epitheliotropic T-cell lymphoma in an American Bulldog J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-27 Alexis Carpenter, Kimberly Aeschlimann, Keiichi Kuroki
An 8-year-old American Bulldog developed coalescing exophytic bulbous nodules that grew rapidly on the left pinna and a single cutaneous mass on the left flank. Histological examination of the pinnal biopsy by a diagnostic laboratory revealed a densely cellular neoplasm with haphazardly arranged round to spindle cells with high mitotic activity and epitheliotropism. The initial diagnosis was a poorly
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Rhabdomyosarcoma of the tongue in a neonatal calf J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-13 Sohta Hishikawa, Yuji Sunden, Aoi Imamura, Tatsuya Nishikawa, Takehito Morita
A newborn male Holstein calf developed a nodular enlargement at the tip of the tongue. Histopathological examination of the mass revealed predominant proliferating small, round, spindloid or polygonal neoplastic cells with scattered myoblast- and myotube-like cells and multinuclear giant cells. Phosphotungstic acid haematoxylin staining revealed cytoplasmic cross-striations in a few neoplastic cells
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Borna disease in an adult free-ranging Eurasian beaver (Castor fiber albicus) J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-12 Christin Ellenberger, Kristin Heenemann, Thomas W. Vahlenkamp, Pierre Grothmann, Christiane Herden, Anja Heinrich
Borna disease (BD) associated with a peracute bacterial septicaemia with was diagnosed in an adult female, naturally infected, free-ranging Eurasian beaver of the subspecies , clinically characterized by weight loss, depression, weakness and gurgled peristaltic sounds. The beaver was euthanized humanely. Necropsy and light microscopy revealed a non-purulent meningoencephalitis with typical mononuclear
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Forensic investigations of suspected livestock depredation by vultures: scientific tools for compensation programmes J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-12 Agustín Rebollada-Merino, Alberto Gómez-Buendía, Lucas Domínguez, Antonio Rodríguez-Bertos
Human–wildlife conflicts may have devastating consequences for fauna due to targeting by humans of wildlife populations suspected to have predated livestock. Suspicion of depredation of extensively raised livestock by vultures in Europe has triggered public administration-led forensic investigations intended to distinguish between predation and scavenging in order to compensate farmers for attacks
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In-nest mortality and pathology of hawksbill sea turtle (Eretmochelys imbricata) embryos and hatchlings in St. Kitts and Nevis J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-09 Alex Mau, Paula Sotomayor Rodríguez, Angela Picknell, Alissa Tepedino, Dominique Capaldo, Heather Fenton, Lemuel Pemberton, Kimberly M. Stewart, Michelle M. Dennis
Strategies to improve the hatch success and survival of critically endangered hawksbill turtles () require knowledge of threats to them including pathological conditions. The objective of this study was to describe the mortality and pathology of embryos and dead-in-nest hatchlings on St. Kitts and Nevis. Over the 2019/20 and 2020/21 nesting seasons, the combined mean (SD) hatch success for the two
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Sand fly-borne diseases in Europe: epidemiological overview and potential triggers for their emergence and re-emergence J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-05 Carla Maia
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Fibrinonecrotic enteritis and orchitis associated with Salmonella enterica subsp houtenae infection in a short-tailed boa (Boa constrictor amarali) J. Comp. Pathol. (IF 0.8) Pub Date : 2024-02-01 Raquel M. de Freitas Pereira, Hodias S. de Oliveira Filho, José L. C. Duarte, Fabiano R. P. Júnior, Telma de Sousa Lima, Kin M.O.L. dos Santos, Edivaldo da Silva Pereira, Nádyra Jerônimo da Silva, Celso J. Bruno de Oliveira, Jeann Leal de Araújo, Fábio de Souza Mendonça
subsp has been recovered from a wide variety of species, including reptiles, and has been linked to important clinical manifestations in snakes and lizards. We describe a case of concomitant fibrinonecrotic enteritis and orchitis associated with subsp infection in a short-tailed boa (). At necropsy, the mucosa of the large intestine was covered by a focally extensive fibrinonecrotic exudate (diphtheritic
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The first report of Listeria monocytogenes detected in pinnipeds J. Comp. Pathol. (IF 0.8) Pub Date : 2024-01-10 Johanna L. Baily, Gavin K. Paterson, Geoffrey Foster, Nicholas J. Davison, Lineke Begeman, Ailsa J. Hall, Mark P. Dagleish
The aim of this study was to describe the pathology in seals from which Listeria monocytogenes was isolated and investigate if the lesions’ nature and severity were related to the phylogeny of isolates. L. monocytogenes was isolated from 13 of 50 (26%) dead grey seal (Halichoerus grypus) pups, six (12%) in systemic distribution, on the Isle of May, Scotland. Similar fatal L. monocytogenes-associated
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Iatrogenic gas embolism in a juvenile loggerhead sea turtle (Caretta caretta) J. Comp. Pathol. (IF 0.8) Pub Date : 2024-01-08 Alejandro Suárez-Pérez, Jorge Orós
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Bilateral renal dysplasia with systemic fibrous osteodystrophy in a four-toed hedgehog (Atelerix albiventris) J. Comp. Pathol. (IF 0.8) Pub Date : 2024-01-01 Risa Makishima, Hirotaka Kondo, Kazuo Goto, Hisashi Shibuya
A 4-month-old female four-toed hedgehog (Atelerix albiventris) presented with lethargy, anorexia, dyspnoea and weight loss. Following death, post-mortem computed tomography (CT) and an autopsy were performed. CT revealed that the external surfaces of bones, including the cranial bones and vertebrae, were rough and osteolytic lesions were present multifocally in the ribs and some appendicular bones
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Primary small intestinal lymphangiosarcoma in a dog presenting with a segmental partial mesenteric volvulus J. Comp. Pathol. (IF 0.8) Pub Date : 2023-12-22 Laura Ballarini, Jennifer Stewart, Kathryn Fleming, Alexandra Matchwick
A 3-year-old Great Dane presented with a history of chronic vomiting and diarrhoea. Abdominal computed tomography followed by exploratory laparotomy revealed a perforated, segmental partial mesenteric volvulus, affecting an abnormal section of distal jejunum, which was resected. Histopathology and immunohistochemistry results were consistent with jejunal lymphangiosarcoma. This case represents the
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Unilateral segmental uterine horn hypoplasia with fallopian tube aplasia in a guinea pig (Cavia porcellus) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-12-22 Morena B. Wernick, Dario D'Ovidio, Maja Ruetten, Judith Howard
A 2-year-3-month-old female guinea pig (Cavia porcellus) was referred for lethargy, weight gain and severe abdominal pain. Ultrasound examination revealed thickening and enlargement of the left uterine horn and an unremarkable right uterine horn. The animal died during ovariohysterectomy due to respiratory and cardiac arrest. Necropsy revealed unilateral segmental uterine horn hypoplasia and aplasia
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Pathological findings and their association with diseases of captive psittacine birds native to Mexico J. Comp. Pathol. (IF 0.8) Pub Date : 2023-12-11 Diana I. Meza-Madrid, Elizabeth Morales-Salinas, Felix D. Sánchez-Godoy
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Macroscopic, cytological and histological diagnosis of proventricular adenocarcinoma in a sulphur-crested cockatoo (Cacatua galerita) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-12-14 Niamh E. Casey, Cassia H.Z. Hare, Iain Cope, Katherine Hughes
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Dilated pore of Winer in a dog J. Comp. Pathol. (IF 0.8) Pub Date : 2023-12-03 Christopher P. Champion, Heather D. Edginton, Jeanine Peters-Kennedy
A 9-year-old male neutered Goldendoodle was presented to the Animal Medical Center of Seattle with a history of a firm, hairless, cystic mass on the dorsal aspect of the neck. The mass had been present for 2 years and would periodically rupture and discharge moderate quantities of yellow–green, soft, semi-solid, keratinaceous material. As rupture of the mass was reported to cause the patient significant
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Gross and histopathological features of tuberculosis in cattle, buffalo and spotted deer (Axis axis) caused by Mycobacterium orygis J. Comp. Pathol. (IF 0.8) Pub Date : 2023-12-01 Ayyaru Jawahar, Gopal Dhinakar Raj, Natesan Pazhanivel, Kumaragurubaran Karthik
Mycobacterium orygis has been isolated from several cases of tuberculosis in various species of animal in India but documentation of the histopathological lesions caused by this organism is scant. Lung and liver tissues with caseous nodules from cattle (n = 8), lung samples from spotted deer (Axis axis) (n = 5) and lung and mediastinal lymph node samples from buffalo (n = 9) were subjected to histopathology
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Highly malignant endometrial stromal sarcoma in a cat J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-26 Teruaki Hirota, Kayoko Yonemaru, Mitsunobu Hattori, Mami Murakami, Hiroki Sakai, Akihiro Hirata
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Histopathological pulmonary lesions in rhesus (Macaca mulatta) and cynomolgus (Macaca fascicularis) macaques experimentally infected with wild-type severe acute respiratory syndrome coronavirus 2 J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-25 Taehwan Oh, Jung Joo Hong, Jae-Hak Park
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes a viral pneumonia characterized by acute interstitial pneumonia and diffuse alveolar damage in humans. Non-human primates (NHPs) are widely used as preclinical animal models for vaccine development against SARS-CoV-2. However, the pathological changes in NHPs have been described only in selected facets and inconsistent nomenclature
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Mammary fibromatosis in a female dog: case report J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-25 Marina P. dos Reys, Lize A.B. Borges, Fernanda R. Souza, Karen Y. Nakagaki, Geovanni D. Cassali
Fibromatosis, or desmoid tumour, is characterized by excessive and infiltrative proliferation of connective tissue originating from aponeurotic muscle structures. Mammary fibromatosis is rare in humans and animals and its precise aetiology is unknown. A 10-year-old mixed-breed female dog developed a mass in the right cranial thoracic mammary gland (M1) and underwent lumpectomy. The mass was firm, with
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Forensic investigations of religious rituals involving poultry: a case report J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-23 Esther Vázquez-Fernández, Agustín Rebollada-Merino, Blanca Chinchilla, Néstor Porras, Antonio Rodríguez-Bertos
Animal victims of human cruelty are receiving increasing attention from the press and society. Veterinary pathologists and civic authorities have a duty not only to elucidate the cause, method and manner of death but also to address the motivation behind a case. Poultry are commonly used as offering to gods in Santería rituals (ebós). Only a few cases have been reported in scientific journals, in contrast
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Altered E-cadherin/β-catenin expression in feline cutaneous squamous cell carcinomas J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-21 Berenice L. Sanz Ressel, Gimena Gomez Castro, Adriana R. Massone, Claudio G. Barbeito
Cutaneous squamous cell carcinoma (CSCC) is the most common malignant skin tumour in cats and the nature of the molecular mechanisms involved is poorly defined. Included among the molecular mechanisms in human and canine CSCCs is altered expression of E-cadherin/β-catenin. This study aimed to explore the immunohistochemical expression pattern of E-cadherin and β-catenin in 43 samples of feline CSCC
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Unusual tongue metastasis from lung adenocarcinoma in a cat with feline lung–digit syndrome J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-21 Marcella Massimini, Paolo E. Crisi, Giuseppe Borzacchiello, Gennaro Altamura, Leonardo Della Salda, Valentina Rinaldi, Andrea De Bonis, Mariarita Romanucci
This report describes the pathological findings in a 15-year-old spayed female Domestic Shorthaired cat with a pulmonary adenocarcinoma characterized by feline lung–digit syndrome (FLDS) and unusual tongue metastasis. Felis catus papillomavirus type 3 (FcaPV-3) DNA was amplified from the lingual sample but not from samples of the pulmonary mass or digital or splenic metastatic lesions, indicating the
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T-cell lymphoma involving the rectum of a dog J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-22 Alison Hayes, Katherine Hughes, Cassia Hare, Lorraine Peschard, Armando S. Lara, Luca Schiavo, Jane Dobson
A mediastinal mass was diagnosed in a 7-year-4-month-old neutered female mixed breed dog following a 3-week history of lethargy, hyporexia and pyrexia. Bi-cavitary imaging, needle aspirate cytology and flow cytometry confirmed WHO clinical stage IVb, intermediate to large T-cell lymphoma involving the mediastinum, liver and spleen. The dog initially responded to a multidrug chemotherapy protocol but
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The possible transport and exclusion mode of lipofuscin in rat myocardium under electron microscopy J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-16 Jian Yang, Li Liu, Jing Zhang, Wei Wang, Chang-Yi Xiao
Lipofuscin accumulation has been observed in human coronary arteries but whether or not myocardial tissue can release lipofuscin generated within cardiomyocytes must be clarified, as this may provide indicators for future anti-ageing research. The hearts of Sprague Dawley rats, aged 6–24 months, were embedded in resin and ultrathin sections cut for electron microscopy. Lipofuscin granules were abundant
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Cutaneous apocrine gland neoplasia in 16 captive African wild dogs (Lycaon pictus) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-14 Emily P. Mitchell, Melanie S. Henker, Karin Lemberger, Christine Gohl, Monir Majzoub-Altweck, Almuth Falkenau, Peter Caldwell, Baptiste Chenet, Marion Mosca, Didier Pin, Daniela Denk
This retrospective study documents the occurrence of single and multiple cutaneous apocrine gland tumours (CATs) on the dorsal midline of 16 captive African wild dogs (AWDs, Lycaon pictus) derived from 161 submissions to diagnostic laboratories in South Africa, France and Germany between 1997 and 2022. Animals included in the study came from zoological institutions in South Africa (n = 2), France (n = 5)
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Pathological features of primary cardiac myxoid tumour in dogs: a review of 11 cases (2002–2022) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-07 Noboru Machida, Takafumi Sasaki, Yusuke Kimura
This report documents the pathological features of primary cardiac myxoid tumour (MT) in 11 dogs. Macroscopically, all the tumours were located in the tricuspid valve (TV), its septal leaflet being predominantly affected. Therefore, it appears that the TV is the most common site of occurrence for cardiac MT in dogs. Two gross anatomical types of canine valvular MT were evident. Seven of the 11 tumours
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Dental and temporomandibular joint pathology of the red fox (Vulpes vulpes) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-04 Audrey L. Atchley, Katherine E. Carr, Katherine M.K. Luong, Janny V. Evenhuis, Frank J.M. Verstraete
Skulls from 305 red foxes (Vulpes vulpes) were examined using predefined criteria to assess for the presence and severity of dental and temporomandibular joint (TMJ) pathology. Of the 305 specimens examined, 131 were male (42.9%), 103 were female (33.4%), 71 were of unknown sex (23.3%), 238 were adults (78.03%) and 67 were young adults (21.97%), with juveniles excluded from the study. Of a maximum
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Bile duct hamartoma in a dog J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-04 Dongsheng Mao, Xudong Song, Dexing Ma, Shouping Hu, Zhuo Zhang, Jingfei Wang, Xijun He
An 11-year-old female Collie presented with a significantly increased abdominal circumference. Computed tomography of the abdomen revealed that the left lateral lobe of the liver contained a large mass, which was excised via laparotomy. Histologically, many small, dilated, cystic luminal structures were anastomosed and connected to a net-like structure. Immunohistochemistry revealed cytokeratin 19-immunopositive
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Retinoschisis: a retrospective study of an uncommon retinal change in cats and dogs J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-03 Joel Di Bernardo, Kim Newkirk, Diane Hendrix
Retinoschisis is a poorly documented form of retinal degeneration characterized by cyst-like splitting that occurs between the inner nuclear and outer plexiform layers. The pathogenesis of retinoschisis is incompletely understood, but congenital, acquired and secondary aetiologies (glaucoma, inflammation, neoplasia) are described in humans. This retrospective study investigated the prevalence and associated
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Ameloblastic fibro-odontosarcoma with mandibular bone invasion and regional lymph node metastasis in a cat: case report J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-30 Laura Nordio, Arianna Costa, Michela Campigli, Marco Rondena
Odontogenic tumours are uncommon neoplasms in domestic animals, mostly solitary and locally infiltrative, but rarely metastatic. We report the case of a 13-year-old neutered male cat presented with a mandibular gingival neoformation. A computed tomography scan revealed an irregular neoformation with marked post-contrast enhancement, associated with lysis of the incisive bone and mandibular symphysis
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Localized pleural mesothelioma in a dog J. Comp. Pathol. (IF 0.8) Pub Date : 2023-11-01 Minori Inanaga, Wakana Yoneji, Kiyokazu Ozaki
Malignant mesotheliomas with localized growth are extremely rare in dogs. A 9-year-old male dog presented with a localized tumour that originated from the parietal pleura and had polypoid growth in the thoracic cavity. Histological examination revealed that the tumour consisted of tubular formations with scattered cysts and minimal papillary growth pattern. Neoplastic cells were immunopositive for
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A case of infundibular cyst with neutrophil cannibalism by squamous cells in a dog J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-20 Hiroyuki Nakayama, Ayano Hashigaya, Meri Hosoya, Kazuyuki Uchida, Nobuo Sasaki
A 6-years and 6-months-old, neutered male mongrel dog had a skin mass between the left eye and nose. Fine needle aspiration biopsy of the mass revealed giant epithelial cells containing many neutrophils in the cytoplasm. The mass was excised and histopathologically diagnosed as an infundibular cyst with giant epithelial-like cells containing neutrophils in part of the lumen. The giant cells were immunopositive
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Anatomopathological characterization of branchial cysts in slaughtered pigs J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-21 Emanoelly M.S. da Silva, Graciela Tonello, Anderson H. Gris, Bruno A. Almeida, Rafael B. Rosa, Karen D.M. Frigeri, Welden Panziera, David Driemeier
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Immunohistochemical analysis of renal oxidative damage in senior and geriatric cats with chronic kidney disease J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-21 Natsume Kurahara, Ayami Yutsudo, Yu Furusawa, Osamu Yamato, Noriaki Miyoshi, Tatsuro Hifumi, Akira Yabuki
Oxidative stress is a well-known cause of chronic kidney disease (CKD). In this study, renal oxidative damage in azotaemic and non-azotaemic aged cats with naturally occurring CKD was investigated using immunohistochemistry for 8-hydroxy-2′-deoxyguanosine (8-OHdG) and 4-hydroxynonenal (4-HNE) as markers of oxidative tissue damage. Kidneys were obtained from aged (>10 years old) azotaemic (n = 13) and
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Encephalic meningioangiomatosis in a dog with high-grade undefined glioma J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-20 Brenda O. Silveira, Stella M.P. de Melo, Fernanda G. Cony, Guilherme C. Serena, Vanessa de C. Pereira, Lucas T. de Castro, Vitória S. Wodzik, Marcele B. Bandinelli, Welden Panziera, Saulo P. Pavarini
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Activation of the Akt signalling pathway as a prognostic indicator in canine soft tissue sarcoma J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-13 Kyohei Miyanishi, Alfarisa Nururrozi, Masaya Igase, Mika Tanabe, Masashi Sakurai, Yusuke Sakai, Nozomi Shimonohara, Mami Murakami, Takuya Mizuno
Canine soft tissue sarcoma (STS) is relatively common in dogs and is the generic term for tumours that originate from mesenchymal cells. While histopathological grade and immunolabelling with Ki-67 have been used for estimating prognosis, additional indicators are needed for predicting prognosis. Aberrant cell signalling pathways may contribute to disease activity and, therefore, prognostic markers
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Caprine arthritis encephalitis virus-induced apoptosis associated with brain lesions in naturally infected kids J. Comp. Pathol. (IF 0.8) Pub Date : 2023-10-03 Nihat Toplu, Tuba Ç. Oğuzoğlu
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Undifferentiated pleomorphic sarcoma in a white-eared opossum (Didelphis albiventris) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-09-23 Jair A. Ferreira Junior, André S. Leonardo, Saulo P. Pavarini, Karla A. Nascimento, Juliana T.S.A. Macêdo, Pedro M.O. Pedroso
We report a case of high-grade undifferentiated pleomorphic sarcoma in a free-living white-eared opossum (Didelphis albiventris) in Central Brazil. Grossly, it appeared as a soft yellow mass, approximately 8 cm in diameter, with an irregular, adherent and ulcerated surface, which extended from the proximal epiphysis of the femur to the proximal third of the tibia and fibula. The mass invaded the medullary
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Immunohistochemical study of CD31 and α-SMA expression for age estimation of porcine skin wounds J. Comp. Pathol. (IF 0.8) Pub Date : 2023-09-23 Karen Pankoke, Søren S. Nielsen, Benjamin M. Jørgensen, Henrik E. Jensen, Kristiane Barington
Age estimation of wounds in veterinary forensic investigations is based on the presence and amount of granulation tissue. However, accurate age assessment is challenging and new time-dependent markers are warranted to support and improve the current procedure. The objective of this study was to evaluate the expression of CD31-positive blood vessels and α-smooth muscle action (α-SMA)-positive myofibroblasts
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Chronic mandibular osteomyelitis associated with a novel probable Kocuria sp in a sugar glider (Petaurus breviceps) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-09-22 Alan T. Mulder, Megan Partyka, Stephen J. Divers, April Childress, James F.X. Wellehan, Justin M. Stilwell
Dental disease in sugar gliders (Petaurus breviceps) is understudied, with only limited clinical and pathological data available. An approximately 7-year-old female sugar glider presented to its primary care veterinarian for a decline in food intake, rapid weight loss and a mass involving the rostral mandible. At necropsy, the mandibular mass effaced most of the rostral mandible and adjacent musculature
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Cor triatriatum sinister with dextrocardia in association with ostium secundum atrial septal defect, subpulmonary ventricular septal defect and bicuspid pulmonary valve in a pig J. Comp. Pathol. (IF 0.8) Pub Date : 2023-09-22 Takanori Shiga, Yumiko Kamiya, Mitsuharu Ohkubo, Takashi Miyamoto, Yoko Kakinuma, Hideki Kayanuma, Takuma Aoki, Yoko Fujii, Naoyuki Aihara, Junichi Kamiie
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Osteosarcoma in a free-living yellow armadillo (Euphractus sexcinctus) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-09-16 Erick P.F. Souto, Artefio M. Oliveira, Débora F. Cardoso, Lucas W.P. Figueiredo, Glaucia D. Kommers, Glauco J.N. Galiza, Rinaldo A. Mota, Antonio F.M. Dantas
An adult male free-living yellow armadillo (Euphractus sexcinctus) was found by hunters and referred for clinical evaluation because of a tumour-like lesion on the carapace. The animal was lethargic and weak with severe dehydration, enophthalmos and cachexia, and was euthanized because of its very poor clinical condition. Necropsy revealed a whitish, exophytic, irregular and moist mass (7 × 6.5 × 1
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Characterization of lesions of nutritional congenital goitre in cattle J. Comp. Pathol. (IF 0.8) Pub Date : 2023-09-15 Luis A. Colque-Caro, Francisco Acuña, Laura S. Aguirre, Agustín Avellaneda-Cáceres, Claudio G. Barbeito, Marcelo Signorini, Dadin P. Moore, Juan F. Micheloud
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A case of canine intestinal malakoplakia J. Comp. Pathol. (IF 0.8) Pub Date : 2023-08-28 Álex Gómez, Estela Pérez, Natalia Calvo-Sánchez, Marta Pérez, María Borobia, Lluís Luján, Ana Rodríguez-Largo, Sergio Villanueva-Saz
Malakoplakia is a rare chronic granulomatous disease usually affecting the urinary bladder and other locations. In humans, the gastrointestinal tract is the second most common location but there are no reports of intestinal malakoplakia in animals. A 10-month-old female French Bulldog was presented with chronic haemorrhagic diarrhoea and anorexia with normochromic-normocytic anaemia and hypoalbuminaemia
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Hepatic arteriovenous malformation in a calf J. Comp. Pathol. (IF 0.8) Pub Date : 2023-08-22 Yanca G.S. Soares, Jefferson S. Ferreira, Édipo M. Campos, Rodrigo C. Alves, Ialys M. Leite, Laynaslan A. Soares, Mirele A.S. Ferreira, Antonio F.M. Dantas, Franklin Riet-Correa, Glauco J.N. Galiza
A case of hepatic arteriovenous malformation is described in a calf that presented with a marked increase in abdominal volume and died 12 h after birth. At necropsy, the calf had marked abdominal distension and haemoperitoneum. The left hepatic lobe was reduced in size and covered by slightly whitish and intensely vascularized membranous tissue. At the edge of the left lobe there were cystic structures
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Feline osteochondromatosis in a 12-year-old feline leukaemia virus-negative cat J. Comp. Pathol. (IF 0.8) Pub Date : 2023-08-17 Álex Gómez, Ana Rodríguez-Largo, Estela Pérez, Natalia Calvo-Sánchez, Sarah Loomans, Koen Chiers, Luis Monteagudo, Lluís Luján, Marta Pérez
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Naturally occurring highly pathogenic avian influenza virus H5N1 clade 2.3.4.4b infection in three domestic cats in North America during 2023 J. Comp. Pathol. (IF 0.8) Pub Date : 2023-08-14 Sarah J. Sillman, Mary Drozd, Duan Loy, Seth P. Harris
The Eurasian strain of highly pathogenic avian influenza (HPAI) H5N1 is a devastating pathogen for birds that also has the capacity to infect mammals. This report describes the presentation, clinical case findings (including haemogram and serum biochemistry), gross and microscopic lesions and virus detection in three HPAI H5N1-infected domestic cats from the USA in 2023. All three cats presented with
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Fatal cerebrovascular accident in a captive red panda (Ailurus fulgens fulgens) with concurrent amdoparvovirus infection J. Comp. Pathol. (IF 0.8) Pub Date : 2023-07-26 Cecilia Gola, Pavel Kvapil, Urska Kuhar, Josué Diaz-Delgado, Charles E. Alex, Justine Shotton, Sarah J. Smith, Sai Fingerhood
We report the pathological and molecular findings in an adult male Himalayan red panda (Ailurus fulgens fulgens) whose death was attributed to parenchymal brain haemorrhage (PBH) of the thalamus. Post-mortem examination revealed severe, acute PBH and intraventricular haemorrhage with major involvement of the thalamus, as well as scattered chronic microinfarctions. Vascular disease in the brain and
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Vulval apocrine adenocarcinoma with tumour-associated eosinophilia in a cat J. Comp. Pathol. (IF 0.8) Pub Date : 2023-07-20
A 10-year-old, spayed female, Domestic Shorthaired cat was referred for surgical removal of a mass on the left vulval fold. An impression smear revealed mixed cell inflammation, with eosinophils predominating focally, and a concurrent bacterial infection, suggesting a primarily inflammatory lesion. However, cytology of a fine-needle aspirate of the mass revealed a neoplastic epithelial cell population
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A subset of equine oral squamous cell carcinomas is associated with Equus caballus papillomavirus 2 infection J. Comp. Pathol. (IF 0.8) Pub Date : 2023-07-19
The aetiology of oral squamous cell carcinoma (SCC) in horses is unknown, but papillomavirus infection as well as chronic periodontal disease are suspected to play a pathogenic role. In humans, some oropharyngeal cancers develop in association with human papillomaviruses. Equus caballus papillomavirus 2 (EcPV2) is suspected to play a causal role in the development of equine genital SCC. Given that
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Meningioma and glioma as the first collision brain tumour reported in small animals J. Comp. Pathol. (IF 0.8) Pub Date : 2023-07-17
We describe the clinical and pathological features of a brain collision tumour consisting of a fibrous meningioma and an anaplastic oligoastrocytoma in a 14-year-old male neutered French Bulldog. Computed tomography of the brain revealed a poorly defined, intra-axial lesion affecting the left frontal lobe. Following euthanasia, histological examination showed an anaplastic oligoastrocytoma invading
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Immunohistochemical characterization of clear cell variant of hepatocellular carcinoma in a sheep J. Comp. Pathol. (IF 0.8) Pub Date : 2023-07-12
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Systemic histiocytic disorder in a jaguar (Panthera onca) J. Comp. Pathol. (IF 0.8) Pub Date : 2023-07-12
A 7-year-old captive female jaguar (Panthera onca) was presented with a 7-day history of dyspnoea and weight loss. Clinical examination revealed hepatomegaly and elevated serum alanine aminotransferase activity. Pulmonary ultrasonography revealed comet-tail images and an alveolar pattern was detected on thoracic radiography. Due to the poor prognosis, the jaguar was euthanized after 10 days. At necropsy
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Cowpox in zoo and wild animals in the United Kingdom J. Comp. Pathol. (IF 0.8) Pub Date : 2023-06-21 Taiana Costa, Mark F. Stidworthy, Rosina Ehmann, Daniela Denk, Ian Ashpole, Gabby Drake, Iuliana Maciuca, Gudrun Zoeller, Hermann Meyer, Julian Chantrey