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Inanaga M, Yoneji W, Ozaki K. Localized pleural mesothelioma in a dog. J Comp Pathol 2023; 207:25-29. [PMID: 37922825 DOI: 10.1016/j.jcpa.2023.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/18/2023] [Accepted: 09/29/2023] [Indexed: 11/07/2023]
Abstract
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 mesothelial markers (calretinin and Wilms' tumour gene 1) and negative for carcinoma markers (thyroid transcription factor 1 and tumour protein 63). The animal was alive with no recurrence or metastasis/dissemination 11 months after surgery. To the best of our knowledge, this is the first report of a localized mesothelioma in a dog without metastasis/dissemination and highlights the value of mesothelial markers for an accurate diagnosis.
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Affiliation(s)
- Minori Inanaga
- Laboratory of Pathology, Faculty of Pharmaceutical Science, Setsunan University, 45-1 Nagaotohgecho, Hirakata, Osaka 573-0101, Japan
| | - Wakana Yoneji
- Nara Animal Referral Clinic, 5-20-7 Mitsugarasu, Nara 631-0061, Japan
| | - Kiyokazu Ozaki
- Laboratory of Pathology, Faculty of Pharmaceutical Science, Setsunan University, 45-1 Nagaotohgecho, Hirakata, Osaka 573-0101, Japan.
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2
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Kiniger C, Janssen JN, Lederer KA, Lipnik K, Doulidis PG. Sclerosing encapsulating peritonitis in cats: a two-case report and literature review. JFMS Open Rep 2023; 9:20551169231178447. [PMID: 37434990 PMCID: PMC10331345 DOI: 10.1177/20551169231178447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023] Open
Abstract
Case series summary Two castrated male domestic shorthair cats (aged 8 months [case 1] and 13 years [case 2]) were presented at the Small Animal Clinic of the Veterinary Medicine University of Vienna, Austria, both with acute vomiting and distended abdomen, as well as a history of chronic apathy, recurrent vomiting and diarrhoea. Both cats underwent invasive diagnostic procedures approximately 1 month before the diagnosis of sclerosing encapsulating peritonitis (SEP), namely an exploratory laparotomy and a bronchoscopy, respectively. Abdominal ultrasound revealed severely corrugated intestinal loops and, in case 2, the presence of peritoneal effusion. A thick and diffuse fibrous capsule around the intestine was detected and removed surgically, and biopsies were taken from the affected organs confirming the SEP. Case 1 recovered well, was discharged some days after surgery and was clinically unremarkable for the next 2 years. Case 2 showed unsatisfactory improvement directly after surgery and was euthanased a few days later, as the owner declined any further therapy. Relevance and novel information SEP is a very rare condition of unclear origins in cats. Here we describe the clinical and diagnostic imaging features, surgical treatment, and outcome of SEP in two cats. The results indicate that prompt diagnosis and appropriate interventions may improve the outcome.
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Affiliation(s)
- Caterina Kiniger
- Clinical Unit of Small Animal Internal Medicine, Department for Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
| | - Janina N Janssen
- Clinical Unit of Small Animal Surgery, Department for Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
| | - Kristina A Lederer
- Diagnostic Imaging, Department for Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
| | - Karoline Lipnik
- Institute of Pathology, Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria
| | - Pavlos G Doulidis
- Clinical Unit of Small Animal Internal Medicine, Department for Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
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3
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McDonough SP, Scrivani PV, Gendron K, Tse M. Mediastinal Serous Cavity Mesothelioma in Two Dogs. J Am Anim Hosp Assoc 2022; 58:194-202. [PMID: 35793490 DOI: 10.5326/jaaha-ms-7016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2021] [Indexed: 11/11/2022]
Abstract
The mediastinal serous cavity (MSC)-well documented but seldom recognized in the caudal mediastinum-is embryologically derived from the omental bursa. Mesothelioma arising from the MSC in two dogs is described. Both dogs presented with acute life-threatening hemorrhagic pleural effusion. Contrast computed tomography revealed a large solitary spherical-to-cylindrical tumor in the caudal mediastinum with variably thick, contrast-enhancing walls with lobular to frond-like proliferations that arose circumferentially and projected internally into a single, variably sized, fluid-attenuating lumen. The wall and lumen corresponded to the serous membrane and serous cavity of the MSC. Surgical exploration confirmed that both tumors arose from the mediastinum. Both had similar histologic findings, and special stains were necessary for definitive diagnosis. The tumor was nonresectable in one dog, and it was euthanized intraoperatively. The other survived 7 mo. An MSC mesothelioma should be considered a possible cause of hemothorax in dogs that may be detected on thoracic radiography and computed tomography. Differential diagnoses include esophageal foreign body or neoplasm, paraesophageal diaphragmatic hernia, MCS empyema, and pulmonary adenocarcinoma, with thoracic computed tomography helping to rule out foreign body and diaphragmatic hernia. For confirmed neoplasms, histochemistry and immunohistochemistry should be performed to differentiate between mesothelioma and pulmonary adenocarcinoma.
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Affiliation(s)
- Sean P McDonough
- From the Department of Biomedical Sciences (S.P.M.), College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - Peter V Scrivani
- From the Department of Clinical Sciences (P.V.S.), College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - Karine Gendron
- From the Department of Veterinary Biosciences and Diagnostic Imaging, College of Veterinary Medicine, University of Georgia, Athens, Georgia (K.G.)
| | - May Tse
- From the City University Diagnostic Laboratory, Lowloon, Hong Kong (M.T.)
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4
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Pascotto E, Gianoncelli A, Calligaro C, Marcuzzo T, Melato M, Rizzardi C, Pascolo L. Ferruginous bodies resolved by synchrotron XRF in a dog with peritoneal malignant mesothelioma. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:35707-35714. [PMID: 30357666 DOI: 10.1007/s11356-018-3521-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
Abstract
Mesothelioma is a malignant tumor mainly correlated to occupational asbestos exposure. Rare reports describe its occurrence also in animals, mainly linked to asbestos in the environment. Asbestos exposure is demonstrated by the appearance of characteristic histological hallmarks: asbestos containing ferruginous bodies that are iron-based structures forming around fibers and also other dust particles. Here we present a clinical case of a suspect of mesothelioma in the peritoneum of a dog with parallel histological observation of ferruginous bodies. To possibly correlate the dog tumor to environmental exposure, we performed X-ray fluorescence (XRF) analyses at two different synchrotrons to resolve the ferruginous bodies' composition. While the histological examination diagnoses a tubulo-papillary mesothelioma, the XRF analyses show that ferruginous bodies contain Si particles, resembling formations of exogenous origin; however, the morphology is unlikely that of asbestos fibers. We speculate that the peritoneal mesothelioma of this dog could be related to environmental exposure to non-asbestos material.
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Affiliation(s)
- Ernesto Pascotto
- ULSS n.2 Marca Trevigiana. Dipartimento di Prevenzione - Servizi Veterinari di Asolo, Treviso, 31100, Italy
| | - Alessandra Gianoncelli
- Elettra - Sincrotrone Trieste S.C.p.A, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Carla Calligaro
- Servizio Diagnostica Veterinaria, University of Udine, 33100 Udine, Italy
| | - Thomas Marcuzzo
- Department of Medical, Surgical, and Health Sciences, University of Trieste, 34149, Trieste, Italy
| | - Mauro Melato
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137, Trieste, Italy
| | - Clara Rizzardi
- Department of Medical, Surgical, and Health Sciences, University of Trieste, 34149, Trieste, Italy
| | - Lorella Pascolo
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137, Trieste, Italy.
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5
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Sonck L, Chiers K, Ducatelle R, Van Brantegem L. Encapsulating peritoneal sclerosis in a young cat. VETERINARY RECORD CASE REPORTS 2018. [DOI: 10.1136/vetreccr-2017-000541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Laurien Sonck
- Department of Pathology, Bacteriology and Avian DiseasesUniversity of GhentMerelbekeBelgium
| | - Koen Chiers
- Department of Pathology, Bacteriology and Avian DiseasesUniversity of GhentMerelbekeBelgium
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian DiseasesUniversity of GhentMerelbekeBelgium
| | - Leen Van Brantegem
- Department of Pathology, Bacteriology and Avian DiseasesUniversity of GhentMerelbekeBelgium
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6
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Moore AR, Coffey E, Leavell SE, Krafsur G, Duncan C, Dowers K, Santangelo KS. Canine bicavitary carcinomatosis with transient needle tract metastasis diagnosed by multiplex immunocytochemistry. Vet Clin Pathol 2016; 45:495-500. [DOI: 10.1111/vcp.12394] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- A Russell Moore
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Emily Coffey
- Department of Clinical Sciences; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Sarah E. Leavell
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Greta Krafsur
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Colleen Duncan
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Kristy Dowers
- Department of Clinical Sciences; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Kelly S. Santangelo
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
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7
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Morini M, Bettini G, Morandi F, Burdisso R, Marcato PS. Deciduoid Peritoneal Mesothelioma in a Dog. Vet Pathol 2016; 43:198-201. [PMID: 16537940 DOI: 10.1354/vp.43-2-198] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Deciduoid mesothelioma is a rare variant of epithelial mesothelioma, up to now only described in human pathology, which bears remarkable cytomorphologic resemblance to the endometrium of pregnancy, termed decidua. A case of peritoneal mesothelioma with deciduoid features in a 10-year-old, female dog is reported. Multiple whitish-gray nodules (1-5 mm in diameter) in parietal peritoneum and mesentery were histologically composed of large, proliferating, polygonal or ovoid cells with an abundant eosinophilic, glassy cytoplasm. Immunohistochemical evaluation indicated that the neoplastic cells coexpressed cytokeratin and vimentin with strong and diffuse cytoplasmic staining, and ultrastructural analysis showed long and slender mesothelial-type microvilli; these findings confirmed the mesothelial origin of the tumor.
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Affiliation(s)
- M Morini
- Dipartimento di Sanità Pubblica Veterinaria e Patologia Animale, Servizio di Anatomia Patologica, Università degli Studi di Bologna, via Tolara di Sopra 50, 40064 Ozzano Emilia, Bologna, Italy
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8
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9
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Advanced Diagnostic Techniques. CANINE AND FELINE CYTOLOGY 2016. [PMCID: PMC7158337 DOI: 10.1016/b978-1-4557-4083-3.00017-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
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Abstract
Cytomorphometry made on cytological slides is the quantitative method of precise analysis of cellular structures, including both cytoplasm and nucleus. The aim of this study was to describe cytomorphometric parameters of mesothelial cells in the course of benign reactive and malignant proliferation and to compare them to carcinomas and adenocarcinomas located within serosal cavities in dogs. The second aim was to evaluate applicability of cytomorphometry to diagnostics of diseases causing accumulation of effusion in serosal cavities. Cytological samples of normal and non-malignant mesothelium, mesothelioma and various carcinomas were collected from dogs. Cytomorphometry was made on the smears stained with Giemsa solution. Mean nuclear and cellular perimeter, mean nuclear and cellular area, mean nuclear and cellular diameter, and mean nuclear and cellular roundness were determined. Moreover, nuclear to cytoplasmic ratio (N/C) was calculated. The data revealed statistically significant differences for all parameters, excluding mean nuclear perimeter, between compared groups. Normal mesothelium cells and their nuclei were significantly smaller and more elongated than cells and nuclei of both benign reactive and malignant neoplastic mesothelium. Only a few differences were observed between benign reactive mesothelium cells and mesothelioma cells - mean nuclear area and mean nuclear diameter of benign reactive mesothelium cells were significantly larger and N/C ratio was higher in comparison to mesothelioma cells. Even though some significant differences were observed, considerable overlap of these cytomorphometric parameters in animals with different diseases limited practical role of these observations. Cytomorphometric analysis of cellular samples collected from dogs with proliferative processes affecting serosal cavities can be only an auxiliary method increasing accuracy of preoperative diagnosis.
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11
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Kim SM, Oh Y, Oh SH, Han JH. Primary diffuse malignant peritoneal mesothelioma in a striped skunk (Mephitis mephitis). J Vet Med Sci 2015; 78:485-7. [PMID: 26568187 PMCID: PMC4829522 DOI: 10.1292/jvms.15-0377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 10-year-old female striped skunk (Mephitis mephitis) was admitted with
severe abdominal distension and lethargy. Cytological examination of the peritoneal fluid
revealed activated mesothelial cells. At necropsy, numerous growing together, projecting,
2 to 20 mm in diameter tawny to white masses were scattered throughout the peritoneum
including the mesentery, omentum and intestinal serosa. Microscopically, the tumor was
composed of prominent papillo-tubular structures, and immunohistochemically, the spindle
to polygonal-shaped tumor cells with nuclear polymorphism were strongly reactive for
calretinin. Based on those diagnostic features, the neoplasia was diagnosed as malignant
mesothelioma. This is the first case report of mesothelioma in the skunk.
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Affiliation(s)
- Su-Min Kim
- Department of Veterinary Pathology, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of Korea
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12
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Using of immunocytochemistry in differential diagnosis of neoplasms of serosal cavities in dogs. Pol J Vet Sci 2014; 17:149-59. [DOI: 10.2478/pjvs-2014-0020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract
The presence of tumor within the serosal cavities, often connected with accumulation of serosal effusion, is a quite common problem in the small animal veterinary medicine. The first step in diagnosis of such cases is cytopathological examination. The aim of the present study was to evaluate the usefulness of cytology and immunocytochemistry, using commercially available antibodies (anti-cytokeratin, anti-vimentin, and anti-desmin), in differential diagnosis of malignant tumors located within serosal cavities in dogs. The final cytological diagnosis of carcinoma/adenocarcinoma, sarcoma, and mesothelioma was obtained on the basis of routine cytopathology and immunocytochemistry, and then confirmed by histopathology and immunohistochemistry. Cytoplasmic immunoreactivitiy of normal mesothelid cells and cytoplasmic immunoreactivity of hyperplastic mesothelial cells revealed constant and strong expression of all examined intermediate filaments: cytokeratin, vimentin and desmin. Application of routine cytopathology and immunocytochemistry allowed 32 neoplastic tumors to be detected: 19 cases of carcinomas/adenocarcinomas, 6 cases of sarcomas, 7 cases of mesotheliomas. Immunostaining of cytopathological samples with chosen set of antibodies: anti-cytokeratin, anti-vimentin, anti-desmin is a useful, and low invasive test for differentiation between mesotheliomas and carcinomas/adenocarcinomas in dogs.
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13
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Abstract
A 21-yr-old female jaguar (Panthera onca) died in a zoo in Teresina, Piaui, Brazil, following a history of abdominal distension, ascites, anorexia, and dyspnea. At necropsy, a dark red, watery, blood-tinged serous fluid was present in the abdominal cavity. The peritoneum was thick with firm, yellow, villous projections. Histologically, the tumors were composed of a biphasic population of cells, which reacted to anti-cytokeratin and anti-vimentin antibodies, consistent with a biphasic benign mesothelioma of peritoneal origin. This is the first reported case of mesothelioma in a captive jaguar.
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14
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Gumber S, Fowlkes N, Cho DY. Disseminated sclerosing peritoneal mesothelioma in a dog. J Vet Diagn Invest 2012; 23:1046-50. [PMID: 21908373 DOI: 10.1177/1040638711416625] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A 7-year-old female German Shepherd Dog was presented with multiple petechiae and ecchymoses along the ventral abdomen, flank, and on the vaginal mucosa. The clinical diagnosis was severe hemoperitoneum and presumed disseminated intravascular coagulopathy. Postmortem examination revealed a 22 cm × 15 cm × 6 cm, firm, and convoluted peritoneal mass along with hemoperitoneum, and multifocal, ill-defined, 0.5-1.5 cm in diameter, white to tan nodules in the pulmonary parenchyma. Histologically, the peritoneal mass was composed of large anaplastic cells consistent with malignant mesothelioma interspersed in abundant fibrous connective tissue. Metastasis of the neoplastic cells occurred to the brain, adrenal glands, lymph nodes, and lungs. On immunohistochemical evaluation, neoplastic cells coexpressed cytokeratin and vimentin, and were negative for cluster of differentiation (CD)18. Electron microscopy revealed numerous surface microvilli around the entire circumference of the neoplastic cells, as well as tight junctions, and desmosome-like structures. Based on test findings, a disseminated sclerosing peritoneal mesothelioma was diagnosed.
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Affiliation(s)
- Sanjeev Gumber
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Drive, Baton Rouge, LA 70803, USA.
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15
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Silva S, Ferreira L, Souza F, Nascimento E, Costa E, Paixão T, Santos R. Conidiobolomicose em ovinos: reavaliação de três casos previamente diagnosticados como tumor etimoidal enzoótico. ARQ BRAS MED VET ZOO 2010. [DOI: 10.1590/s0102-09352010000600031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Burgess HJ, Kerr ME. Cytokeratin and vimentin co-expression in 21 canine primary pulmonary epithelial neoplasms. J Vet Diagn Invest 2010; 21:815-20. [PMID: 19901281 DOI: 10.1177/104063870902100607] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Co-expression of cytokeratin and vimentin has been traditionally associated with a few select tumors. However, this phenomenon is being recognized in a wider range of tumors. Twenty-one canine primary pulmonary epithelial neoplasms were evaluated for the co-expression of cytokeratin and vimentin. The histologic pattern and grade, and an immunohistochemical grade for cytokeratin and vimentin staining, were determined for each neoplasm. Adenocarcinomas predominated, and histologically, most tumors were grade II. All of the neoplasms stained positive for cytokeratin, while only 8 (38%) stained positive for both vimentin and cytokeratin. Papillary adenocarcinomas were consistently vimentin negative. The anaplastic histologic pattern had significantly more vimentin staining than the other histologic patterns. There was no significant difference in histologic grade or grading criteria between those tumors that stained with vimentin and those that did not. The present study established that cytokeratin and vimentin co-expression occurs in canine primary pulmonary epithelial tumors at a similar frequency to human pulmonary neoplasms. Further investigation will be needed to characterize the significance of this finding, particularly with respect to prognosis.
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Affiliation(s)
- Hilary J Burgess
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
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17
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Tursi M, Martinetti M, Gili S, Muscio M, Gay L, Crudelini M, Cenacchi G, Pucci A. Myocardial Adenomatoid Tumor in Eight Cattle: Evidence for Mesothelial Origin of Bovine Myocardial Epithelial Inclusions. Vet Pathol 2009; 46:897-903. [DOI: 10.1354/vp.08-vp-0097-t-fl] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The adenomatoid tumor is an uncommon benign lesion, thus far described only in humans. Adenomatoid tumors typically arise in the genital tract, exceptionally in the heart, and usually represent an incidental finding. Microscopically, they are constituted by epithelioid cells that form tubular structures and anastomosing channels within a fibrous stroma. Mesothelial origin of these lesions is suggested by their immunohistochemical characteristics. In cattle, previously reported myocardial epithelial inclusions are morphologically similar in that the cells are immunoreactive for both cytokeratins and vimentin, and bear surface microvilli. Myocardial lesions found incidentally at slaughter in 8 cattle histologically resembled the so-called bovine myocardial epithelial inclusions and had morphologic and immunohistochemical features consistent with human adenomatoid tumor. All lesions were in the left ventricular myocardium, adjacent to the epicardium, and composed of epithelioid cells that formed cords and tubules, and were immunoreactive for pan-cytokeratins, cytokeratin 5/6, vimentin, calretinin, Wilms' tumor 1 suppressor gene, and CD30 antigen. By electron microscopy, numerous long slender microvilli were associated with desmosomes and tonofibrils. The immunohistochemical and ultrastructural features were considered consistent with mesothelial origin. These lesions, corresponding to the previously described myocardial epithelial inclusions in cattle, might be considered embryologic rests and could represent the bovine counterpart of the human adenomatoid tumor.
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Affiliation(s)
- M. Tursi
- Animal Pathology Department, Veterinary School, University of Turin, 10095 Grugliasco (Torino)
| | | | - S. Gili
- Veterinary Department, ASL 2, 10141 Turin
| | - M. Muscio
- Pathology Department, Regina Margherita Hospital, 10126 Turin
| | - L. Gay
- Animal Pathology Department, Veterinary School, University of Turin, 10095 Grugliasco (Torino)
| | - M. Crudelini
- Pathology Department, Regina Margherita Hospital, 10126 Turin
| | - G. Cenacchi
- Histopathology Department, S. Orsola Hospital, University of Bologna, 40138 Bologna, Italy
| | - A. Pucci
- Pathology Department, Regina Margherita Hospital, 10126 Turin
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18
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Avakian A, Alroy J, Rozanski E, Keating J, Rosenberg A. Lipid-rich pleural mesothelioma in a dog. J Vet Diagn Invest 2008; 20:665-7. [PMID: 18776107 DOI: 10.1177/104063870802000525] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An 11-year-old, neutered, male Golden Retriever cross dog was euthanized following a history of recurrent pericardial effusions. At necropsy, blood-tinged pericardial and intrathoracic effusions were seen along with numerous firm to hard plaque-like masses that studded the epicardial, pericardial, mediastinal, and costal pleural surfaces. Within the right thorax, the lesions coalesced into a large mass that occupied most of the cavity. Histologically, the masses were composed of solid sheets and papillary aggregates of medium-sized polygonal cells that contained abundant vacuolated to clear cytoplasm. Some of the cytoplasmic vacuoles stained positive with oil red O. The stroma contained metaplastic trabeculae of woven and lamellar bone. Immunohistochemically, the neoplastic cells expressed vimentin, pancytokeratin, and S-100 protein. Transmission electron microscopy corroborated the presence of intracytoplasmic vacuoles and demonstrated prominent intercellular junctional complexes and apically located microvilli. These findings are consistent with a lipid-rich variant of mesothelioma. To the authors' knowledge, this is the first report of a lipid-rich mesothelioma in a dog.
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Affiliation(s)
- Arlen Avakian
- Charles River Laboratories, Shrewsbury, MA 01545, USA.
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19
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Abstract
This paper reports on an unusual case of pleural epitheloid mesothelioma in a nine-month-old male, mixed breed dog. The dog was presented in-extremis and, on post mortem examination, multiple, exophytic, frequently pedunculated, yellowish-red, soft to firm masses ranging from 3 mm to 6 cm in diameter were diffusely distributed over, and attached to, the pericardial and parietal pleural surfaces. Microscopically, these masses consisted of round to partially polygonalshaped, anaplastic cells with minimal cytoplasm and hyperchromatic nuclei covering papillomatous projections or as part of more densely cellular masses. A supporting fibrovascular stroma and mitotic figures were also evident. Constituent tumour cells were labeled positively with antibodies against both vimentin and cytokeratin. In contrast, the same cells exhibited equivocal labeling with an antibody directed against calretinin antigen and did not label with antibodies against carcinoembryonic antigen (CEA) and milk fat globule-related antigen (MFGRA). Such tumours are rare in dogs, particularly in such a young animal.
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Affiliation(s)
- Sevil Atalay Vural
- Department of Pathology, Faculty of Veterinary Medicine, Ankara University, 06110 Diskapi/Ankara, Turkey.
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20
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Reggeti F, Brisson B, Ruotsalo K, Southorn E, Bienzle D. Invasive epithelial mesothelioma in a dog. Vet Pathol 2005; 42:77-81. [PMID: 15657276 DOI: 10.1354/vp.42-1-77] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This report describes the gross, microscopic, and immunohistochemical features of an invasive epithelial mesothelioma in an 11-year-old neutered male Golden Retriever. The tumor involved the pericardium, pleura, mediastinum, and peritoneum and invaded into submesothelial tissues. Neoplastic cells in the thoracic fluid showed prominent features of malignancy in a background of mixed inflammatory cells and scattered erythrocytes. Histologically, the tumor consisted of nests of epithelioid cells with frequent mitotic figures and multinucleation that infiltrated submesothelial tissues. Neoplastic cells strongly coexpressed vimentin and cytokeratin intermediate filaments, which assisted in the differentiation from other epithelial tumors of nonmesothelial origin.
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Affiliation(s)
- F Reggeti
- Department of Pathobiology, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
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21
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Sato T, Miyoshi T, Shibuya H, Fujikura J, Koie H, Miyazaki Y. Peritoneal Biphasic Mesothelioma in a Dog. ACTA ACUST UNITED AC 2005; 52:22-5. [PMID: 15703007 DOI: 10.1111/j.1439-0442.2004.00680.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A 10-year-old German shepherd dog was presented with a severe abdominal distension. At necropsy, whitish and firm mass was observed in the mesentery with metastases in the pericardium and pleura. The intestinal serosa was thickened and stiff. Histologically, the tumours were composed of a biphasic population of cells, which reacted with cytokeratin, vimentin and Wilms' tumour 1 protein antibody. Ultrastructural examination revealed numerous microvilli, abundant rough endoplasmic reticulum, numerous desmosomes and bundles of microfilament. The tumour was classified as biphasic mesothelioma of peritoneal origin.
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Affiliation(s)
- T Sato
- Laboratory of Veterinary Pathology, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan.
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