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Diaz-Delgado J, Quesada-Canales O, Arbelo M, Sierra E, Edwards JF, Suarez-Bonnet A, Santana-Suarez C, Espinosa de Los Monteros A, Fernandez A. Multicentric Benign Epithelial Inclusions in a Free-ranging Risso's Dolphin (Grampus griseus). J Comp Pathol 2016; 155:267-271. [PMID: 27392421 DOI: 10.1016/j.jcpa.2016.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/28/2016] [Accepted: 06/02/2016] [Indexed: 11/30/2022]
Abstract
This report describes the histological and immunohistochemical features of multicentric, benign, epithelial inclusions (BEIs) in a free-ranging, adult, female Risso's dolphin (Grampus griseus). The differential diagnoses included ectopic hamartomatous epithelial inclusions, non-Müllerian choristoma, Müllerian choristoma and low-grade metastatic carcinoma/mesothelioma. The most likely diagnosis of such BEIs was multicentric, embolic, reactive mesothelium, as suggested by cytomorphological and immunophenotypical features of the BEIs, the occurrence of focal pleural rupture and the immunophenotype of the pleural mesothelium. The former represents a pathological condition not previously reported in a marine mammal species, rarely described in animals, and relatively infrequently recognized in man.
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Affiliation(s)
- J Diaz-Delgado
- Veterinary Histology and Pathology, Institute for Animal Health, Veterinary College, University of Las Palmas de Gran Canaria, Trasmontaña s/n, Arucas, Gran Canaria, Spain; Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
| | - O Quesada-Canales
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - M Arbelo
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - E Sierra
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - J F Edwards
- Veterinary Histology and Pathology, Institute for Animal Health, Veterinary College, University of Las Palmas de Gran Canaria, Trasmontaña s/n, Arucas, Gran Canaria, Spain
| | - A Suarez-Bonnet
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - C Santana-Suarez
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - A Espinosa de Los Monteros
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - A Fernandez
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
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2
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Caserto BG. A Comparative Review of Canine and Human Rhabdomyosarcoma With Emphasis on Classification and Pathogenesis. Vet Pathol 2013; 50:806-26. [DOI: 10.1177/0300985813476069] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rhabdomyosarcomas are a diverse group of malignant mesenchymal neoplasms exhibiting variable levels of differentiation toward skeletal myocytes. Neoplastic cells may resemble relatively undifferentiated myoblasts, satellite cells, or more differentiated elongated spindle cells and multicellular myotubes. In veterinary medicine, classification into subtypes and variants is based on an outdated system derived from human pathology and is solely based on histologic characteristics. In contrast, classification of human rhabdomyosarcoma is based on histologic, immunohistochemical, and molecular diagnostic techniques, and subclassification has clinical and prognostic relevance. Relevance of tumor subtyping has not been established in veterinary medicine. Recent discoveries of components of the molecular pathogenesis and genomes of human rhabdomyosarcomas have led to new diagnostic techniques and revisions of the human classification system. The current classification system in veterinary medicine is reviewed in light of these changes. Diagnosis of rhabdomyosarcoma using histopathology, electron microscopy, and the clinical aspects of human and canine rhabdomyosarcomas is compared. The clinical features and biologic behavior of canine rhabdomyosarcomas are compared with canine soft tissue sarcomas.
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Affiliation(s)
- B. G. Caserto
- Cornell University College of Veterinary Medicine, Department of Biomedical Sciences, Ithaca, NY, USA
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Quesada O, Suárez-Bonnet A, Andrada M, Fernández A, de los Monteros AE. Epithelial and pancreatic choristoma in bovine lymph nodes. J Comp Pathol 2009; 142:218-22. [PMID: 19758598 DOI: 10.1016/j.jcpa.2009.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 05/20/2009] [Accepted: 07/18/2009] [Indexed: 11/26/2022]
Abstract
Lymph nodes from 186 cows were evaluated as part of a bovine tuberculosis eradication programme. The mediastinal lymph nodes of 13 animals contained atypical structures. In 12 cases (6.45%) these consisted of multiple epithelial structures and, in one case, of pancreatic-like tissue. Immunohistochemistry (IHC) revealed that the epithelial structures were consistent with respiratory epithelium and with ectopic pancreatic tissue, respectively. To the best of our knowledge these are the first histological and immunohistochemical descriptions of epithelial and pancreatic choristomas in bovine lymph nodes.
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Affiliation(s)
- O Quesada
- Unidad de Histología y Patología Animal, Instituto Universitario de Sanidad Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, Las Palmas, Spain.
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4
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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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5
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Komine M, Kawasako K, Okamoto M, Matsuda K, Hirayama K, Takehana K, Koiwa M, Kurosawa T, Taniyama H. Epithelioid cells in mediastinal lymph nodes of cattle without cancer. Vet Pathol 2009; 46:430-8. [PMID: 19176503 DOI: 10.1354/vp.08-vp-0166-t-fl] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Epithelioid cells are found in lymph nodes in cases of metastatic carcinoma; however, epithelioid cells with benign features have also been discovered incidentally in lymph nodes. Epithelioid cells were observed in mediastinal lymph nodes of cattle without cancer during routine diagnostic necropsy. To explain this finding, the authors evaluated the prevalence and histopathologic, immunohistochemical, and ultrastructural features retrospectively using mediastinal lymph nodes from 110 cattle and found that 66 of the lymph nodes contained epithelioid cells. In all 66 nodes, most of the epithelioid cells were individual or aggregated in nodal sinuses; in 21 nodes, some epithelioid cells formed tubular structures. The individual and aggregated epithelioid cells were mostly considered to be mesothelial in origin by immunohistochemical and ultrastructural examination; presumably, they entered the lymph nodes via lymphatic vessels, because they were found in afferent lymphatic vessels and nodal sinuses. Although the presence of epithelioid cells in lymph nodes prompts suspicion of metastatic carcinoma, the epithelioid cells in these bovine lymph nodes did not disrupt nodal architecture, lacked atypia or mitotic figures, and did not invade nodal parenchyma.
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Affiliation(s)
- M Komine
- Department of Veterinary Pathology, School of Veterinary Medicine, Rakuno Gakuen University, 582-1 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
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Oishi Y, Matsumoto M, Yoshizawa K, Suzuki J, Fujihira S, Tsubura A, Morii S. Malignant Atriocaval Tumor of the Heart in an Old Male Sprague-Dawley Rat. J Toxicol Pathol 1993. [DOI: 10.1293/tox.6.89s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Yuji Oishi
- Department of Pathology, Toxicology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd
| | - Masahiro Matsumoto
- Department of Pathology, Toxicology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd
| | - Katsuhiko Yoshizawa
- Department of Pathology, Toxicology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd
| | - Junya Suzuki
- Department of Pathology, Toxicology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd
| | - Shiro Fujihira
- Department of Pathology, Toxicology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd
| | - Airo Tsubura
- Department of Pathology, Kansai Medical University
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