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Flores AR, Lobo J, Nunes F, Rêma A, Lopes P, Carvalho L, Bartosch C, Amorim I, Gärtner F. Canine ovarian gonadoblastoma with dysgerminoma overgrowth: a case study and literature review. J Ovarian Res 2019; 12:89. [PMID: 31547830 PMCID: PMC6757443 DOI: 10.1186/s13048-019-0561-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 08/28/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Gonadoblastoma (GB) is a rare mixed germ cell-sex cord-stromal tumour, first described in humans, commonly found in dysgenetic gonads of intersex patients that have a Y chromosome. However, this entity in not recognized in the WHO classification of tumours of genital system of domestic animals. Herein, we describe a case of ovarian gonadoblastoma with proliferation of dysgerminoma and sex cord-stromal tumour components, in a phenotypically and cytogenetically normal bitch. CASE PRESENTATION A 17-year-old cross-breed bitch had a firm, grey-white multinodular mass in the left ovary. The tumour was submitted to histopathological examination and Y chromosome detected through karyotype analysis and PCR studies. Microscopically, the ovary was almost replaced by an irregular neoplasm composed of three distinct, intermixed elements: dysgerminoma, mixed germ cell-sex cord-stromal tumour resembling human GB and a proliferative sex cord-stromal tumour component. The germ cells of gonadoblastoma and dysgerminoma components were immunoreactive for c-KIT. Sex cord-stromal cells of gonadoblastoma were immunoreactive for α-inhibin. The sex cord-stromal tumour was immunoreactive for AE1/AE3, occasionally for α-inhibin and negative for epithelial membrane antigen (EMA). The karyotype was 78, XX and PCR analysis confirmed the absence of the Y chromosome. CONCLUSION Based on these findings, a diagnosis of gonadoblastoma with proliferation of dysgerminoma and sex cord-stromal tumour was made. This is the first case of ovarian gonadoblastoma in a female dog.
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Affiliation(s)
- Ana R Flores
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313, Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- Center of Animal and Veterinary Sciences (CECAV), University of Trás-os-Montes e Alto Douro (UTAD), Quinta dos Prados, apartado 1013, 5001-801, Vila Real, Portugal
| | - João Lobo
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313, Porto, Portugal
- Department of Pathology, Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal
- Cancer Biology and Epigenetics Group, Research Center (CI-IPOP) of Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal
| | - Francisco Nunes
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313, Porto, Portugal
- Epidemiology Research Unit, Institute of Public Health of the University of Porto (ISPUP), Rua das Taipas n°135, 4050-600, Porto, Portugal
- Marinha Grande Veterinary Hospital, Rua D. João Pereira Venâncio nr. 7, 2430-291, Marinha Grande, Portugal
| | - Alexandra Rêma
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313, Porto, Portugal
| | - Paula Lopes
- Department of Pathology, Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal
| | - Luís Carvalho
- Marinha Grande Veterinary Hospital, Rua D. João Pereira Venâncio nr. 7, 2430-291, Marinha Grande, Portugal
| | - Carla Bartosch
- Department of Pathology, Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal
- Cancer Biology and Epigenetics Group, Research Center (CI-IPOP) of Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal
| | - Irina Amorim
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313, Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- Institute for Research and Innovation in Health, (i3S), University of Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
| | - Fátima Gärtner
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr.228, 4050-313, Porto, Portugal.
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal.
- Institute for Research and Innovation in Health, (i3S), University of Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal.
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Inoue S, Yonemaru K, Yanai T, Sakai H. Mixed germ cell-sex cord-stromal tumor with a concurrent interstitial cell tumor in a ferret. J Vet Med Sci 2014; 77:225-8. [PMID: 25311985 PMCID: PMC4363027 DOI: 10.1292/jvms.14-0435] [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 5-year-old male ferret presented with an enlarged canalicular testis in the left inguinal region. Microscopically, the enlarged testis consisted of a diffuse intimately admixed proliferation of c-kit-positive germ cell-like and Wilms tumor-1 protein-positive Sertoli cell-like components, but no Call-Exner body was detected. In addition, the compact proliferation of steroidogenic acute regulatory protein-intense positive interstitial cells was identified in a separate peripheral area of the mass. Based on histopathological and immunohistochemical findings, the tumor was diagnosed as a mixed germ cell-sex cord-stromal tumor with a concurrent interstitial cell tumor.
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Affiliation(s)
- Saki Inoue
- Laboratory of Veterinary Pathology, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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