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Goto S, Iwasaki R, Sakai H, Mori T. A retrospective analysis on the outcome of 18 dogs with malignant ovarian tumours. Vet Comp Oncol 2020; 19:442-450. [PMID: 32700381 DOI: 10.1111/vco.12639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 02/05/2023]
Abstract
Little evidence is available regarding the prognosis of dogs with malignant ovarian tumours. The objective of this retrospective study was to describe the outcomes and determine the prognostic factors for dogs with malignant ovarian tumours following treatment, including surgery with or without adjuvant therapy. Eighteen dogs were studied, their median age was 12 years (range: 7-15 years), and their median body weight was 6.9 kg (range: 2.3-17.8 kg). Following histopathologic diagnoses revealed that granulosa cell tumour was the most common type (n = 9), followed by dysgerminoma (n = 5), and adenocarcinoma (n = 4). Eleven dogs had surgery alone. Seven dogs had surgery with adjuvant therapy, including chemotherapy and/or radiotherapy. The median survival time (ST) was 1009 days when only deaths owing to the ovarian tumours were considered, and predictors of median ST were T-category (≥ T3, 443 days vs ≤ T2, 1474 days; P = .002), presence of metastatic disease (present, 391 days vs absent, 1474 days; P < .001) and lymphovascular space invasion (present, 428 days vs absent, 1474 days; P = .003) in a univariate analysis. Median ST in dogs with granulosa cell tumour seemed longer than in dogs with dysgerminoma and adenocarcinoma, although the difference was statistically insignificant (1474 days vs 458 days, respectively; P = .10). Considering the good prognosis, aggressive treatment can be recommended for dogs with malignant ovarian tumours, especially early-stage cases. Despite metastasis being present at diagnosis, half of the dogs with metastasis survived for more than 1 year.
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Affiliation(s)
- Sho Goto
- Animal Medical Centre, Gifu University, Gifu, Japan
| | | | - Hiroki Sakai
- Laboratory of Veterinary Pathology, Joint Department of Veterinary Medicine, Gifu University, Gifu, Japan
| | - Takashi Mori
- Laboratory of Veterinary Clinical Oncology, Joint Department of Veterinary Medicine, Gifu University, Gifu, Japan
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Navas-Suárez PE, Díaz-Delgado J, Matushima ER, Fávero CM, Sánchez Sarmiento AM, Sacristán C, Ewbank AC, Marques Joppert A, Barbanti Duarte JM, dos Santos-Cirqueira C, Cogliati B, Mesquita L, Maiorka PC, Catão-Dias JL. A retrospective pathology study of two Neotropical deer species (1995-2015), Brazil: Marsh deer (Blastocerus dichotomus) and brown brocket deer (Mazama gouazoubira). PLoS One 2018; 13:e0198670. [PMID: 29879222 PMCID: PMC5991706 DOI: 10.1371/journal.pone.0198670] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 05/23/2018] [Indexed: 11/18/2022] Open
Abstract
This retrospective study describes the biological and epidemiological aspects, gross and microscopical findings, and most likely causes of death (CD) in two species of Neotropical deer in Brazil. The animals were collected between 1995 and 2015 and represented 75 marsh deer (MD) and 136 brown brocket deer (BBD). Summarized, pneumonia was diagnosed microscopically in 48 MD and 52 BBD; 76 deer suffered trauma, involving dog attack (14 BBD) and vehicle-collision (14 BBD). Pulmonary edema (50 MD; 55 BBD) and congestion (57 MD; 78 BBD) were the most common findings for both species. Additionally, we diagnosed ruminal and myocardial mycosis in MD and BBD, respectively; ovarian dysgerminoma and pancreatic trematodiasis in BBD; and lesions suggestive of malignant catarrhal fever and orbiviral hemorrhagic disease in both species. The main CD in MD was: respiratory (41/75), alimentary, nutritional, trauma and euthanasia (3/75 each). Correspondingly, in BBD were: trauma (34/131), respiratory (30/131) and euthanasia (9/131). Respiratory disease was often defined by pulmonary edema and pneumonia. We provide evidence that respiratory disease, mainly pneumonia, is a critical pathological process in these Neotropical deer species. Although no etiological agents were identified, there is evidence of bacterial and viral involvement. Our results show trauma, mainly anthropogenic, as a common ailment in BBD. We propose to prioritize respiratory disease in future research focused on South American deer health aspects. We believe anthropogenic trauma may be a primary threat for populations of BBD.
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Affiliation(s)
- Pedro Enrique Navas-Suárez
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Josué Díaz-Delgado
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Eliana Reiko Matushima
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Cintia Maria Fávero
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Angélica Maria Sánchez Sarmiento
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Carlos Sacristán
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Ana Carolina Ewbank
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Adriana Marques Joppert
- Divisão Técnica de Medicina Veterinária e Manejo da Fauna Silvestre (DEPAVE-3), São Paulo, Brazil
| | - Jose Mauricio Barbanti Duarte
- Deer Research and Conservation Center (NUPECCE), Department of Animal Science, São Paulo State University, Jaboticabal, São Paulo, Brazil
| | | | - Bruno Cogliati
- Laboratory of Morphological and Molecular Pathology, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Leonardo Mesquita
- Laboratory of Animal Models, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Paulo César Maiorka
- Laboratory of Animal Models, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - José Luiz Catão-Dias
- Laboratory of Wildlife Comparative Pathology - LAPCOM, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
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Park JK, Goo MJ, Hong IH, Ki MR, Han JY, Jeong KS. Immunohistochemistry Diagnosis of an Ovarian Dysgerminoma in One Bitch. Reprod Domest Anim 2009; 44:855-8. [DOI: 10.1111/j.1439-0531.2008.01135.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wong MA, Mariani CL, Powe JR, Clemmons RM. Teratoma in the Cervical Spinal Cord of a Dog. J Am Anim Hosp Assoc 2007; 43:292-7. [PMID: 17823480 DOI: 10.5326/0430292] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
An 11-year-old, spayed female giant schnauzer was presented for evaluation of chronic, progressive tetraparesis. Diagnostic imaging was consistent with intervertebral disk protrusion, and surgical decompression and stabilization were performed. Postoperatively the dog did not improve, and further imaging suggested an intramedullary mass at the level of the sixth cervical vertebra. The dog was euthanized 7 days after surgery, and a teratoma was found postmortem.
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Affiliation(s)
- Michael A Wong
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32610, USA
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Abstract
The actual incidence of reproductive tract tumors is difficult to ascertain, presumably because a significant percentage of dogs and cats are neutered, particularly in the United States. Data from European countries, where elective neutering is less common, provides insights. Several studies document the relative frequency of reproductive tumors. Larger studies of the more common tumors, e.g., testicular tumors, provide a substantial amount of information on the clinical presentation and response to treatment of dogs, but overall there is less information available on cats. Numerous case reports document the less commonly reported tumors and will be included in the following discussion.
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Affiliation(s)
- Margaret C McEntee
- Department of Clinical Sciences, Box # 31, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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