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Zwai HA, Al-Attar ASR, Morsi AE, El-Fetouh MSA. Pathological, histochemical, and immune-histochemical studies on some canine-skin neoplasm at Sharkia province, Egypt. Open Vet J 2024; 14:481-499. [PMID: 38633166 PMCID: PMC11018408 DOI: 10.5455/ovj.2024.v14.i1.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 12/15/2023] [Indexed: 04/19/2024] Open
Abstract
Background Cutaneous neoplastic disorders are often observed in small mammal pets, such as dogs, regardless of their gender. Aim An important objective of this work was to give a full account of the clinical, pathological, and immune-histochemical features of several skin tumors in dogs. Methods This study was a case series in the hospital clinic, Faculty of Veterinary Medicine, Zagazig University, Egypt. Twenty-five dogs (14 males and 11 females) were examined clinically during the period from March 2022 to October 2023. The skin swelling was collected from affected animals and then subjected to a detailed histopathological study to record the different gross and microscopic findings and confirm the diagnosis by immunohistochemistry. Results Skin neoplasia in dogs was exposed to various clinical signs, and the dogs' ages ranged between 3 and 11 years. Concerning tumor features, the majority of neoplasms were malignant (65.52%) more than benign (34.48%). The study revealed the presence of 29 cases of dogs showed neoplasia with different prevalence rates including squamous cell carcinoma (13.79%), mast cell tumor (6.89%), basal cell tumors (10.34%), histiocytoma (6.89%), trichoepithelioma (10.34%), transmissible venereal tumor (10.34%), trichilemmoma (3.44%), scalp paraganglioma (3.44%), pilomatricoma (10.34%), malignant melanomas (17.24%), and miscellaneous cases as fat necrosis (6.89%), in males and females dogs with different histopathological lesions and immunohistochemistry expressions for pan-cytokeratin (CK), melanocyte-differentiation antigens (S100 protein), and synaptophysin. Conclusion Malignant melanomas (17.24%) are the extremely common cutaneous tumors diagnosed in this study. Meanwhile, benign tumors such as trichilemmoma, trichoepithelioma, pilomatricoma, and paraganglioma are less frequent in dogs.
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Affiliation(s)
- Hatem A. Zwai
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
- Libyan Authority for Scientific Research, Tripoli, Libya
| | - Al-Sayed R. Al-Attar
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Abdulla E. Morsi
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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McGrath AM, Cook MR, Yang C, Premanandan C, Lumbrezer-Johnson S, Hostnik ET, Lapsley J, Tremolada G, Selmic LE. Metastatic carcinoma of unknown origin in a dog. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2023; 64:833-838. [PMID: 37663020 PMCID: PMC10426243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Although cancer of unknown primary origin (CUP) is well-described in the human literature, it is not as well-understood within veterinary medicine. This case report represents one of few focused on describing CUP in a dog. Key clinical message: Metastatic CUP should be considered as a differential diagnosis despite being a rare disease entity that is infrequently reported within the veterinary literature.
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Affiliation(s)
- Alysha M McGrath
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Matthew R Cook
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Ching Yang
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Christopher Premanandan
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Sarah Lumbrezer-Johnson
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Eric T Hostnik
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Janis Lapsley
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Giovanni Tremolada
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
| | - Laura E Selmic
- Department of Veterinary Clinical Sciences (McGrath, Cook, Lumbrezer-Johnson, Hostnik, Lapsley, Tremolada, Selmic) and Department of Veterinary Biosciences (Premanandan), College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, Ohio 43210, USA; Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, Pennsylvania 19104, USA (Yang)
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Brinker EJ, Ceriotti S, Naskou MC, Spangler EA, Groover ES, Neto RLALT. Cancer of unknown primary in a mare: case report and comparative pathology review. J Vet Diagn Invest 2021; 33:1142-1146. [PMID: 34250853 DOI: 10.1177/10406387211030509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A 25-y-old Percheron mare was admitted to the teaching hospital because of lethargy and intractable dyspnea. Thoracoabdominal ultrasound examination identified severe peritoneal effusion, mild bilateral pleural effusion, and a diffuse pulmonary nodular pattern. Cytology of peritoneal fluid revealed a hypercellular sample with clusters of neoplastic polygonal cells and admixed macrophages. Euthanasia was followed by postmortem examination; marked bi-cavitary effusion was present, and innumerable up to 4-cm diameter, round-to-floriform nodules were diffusely evident throughout serosal surfaces as well as the pulmonary and hepatic parenchyma. Disseminated adenocarcinoma, predominantly affecting lung and liver with widespread serosal implantation, was confirmed on light microscopy. Neoplastic cells had strong immunolabeling for pancytokeratin and lacked immunoreactivity to vimentin, napsin A, and Pax8. Cytokeratin 7 and thyroid transcription factor-1 were non-contributory given absent and inconsistent internal control reactivity, respectively. Such results, combined with the lack of a major mass that would indicate a primary site, were supportive of carcinoma of unknown primary site, which remains a conundrum in human oncology, and is poorly explored in veterinary medicine, mainly as a result of clinical and diagnostic limitations.
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Affiliation(s)
- Emily J Brinker
- Departments of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Serena Ceriotti
- Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Maria C Naskou
- Departments of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Elizabeth A Spangler
- Departments of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Erin S Groover
- Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Rachel L A L T Neto
- Departments of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
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