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Plüss J, Franzen J, Origgi FC, Marchionatti E. Metastatic cornual melanoma in a Valesian copperneck goat. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jeanette Plüss
- Clinic for Ruminants Department of Clinical Veterinary Medicine Vetsuisse Faculty University of Bern Bern Switzerland
| | - Jan Franzen
- Vetsuisse Faculty Institute of Animal Pathology University of Bern Bern Switzerland
| | - Francesco C. Origgi
- Vetsuisse Faculty Institute of Animal Pathology University of Bern Bern Switzerland
| | - Emma Marchionatti
- Clinic for Ruminants Department of Clinical Veterinary Medicine Vetsuisse Faculty University of Bern Bern Switzerland
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Conceição A, Cajueiro J, Mendonça C, Souza M, Afonso J, Oliveira J, Santos R, Arenales A. Metastatic melanoma in a Saanen goat: clinical, ultrasonographic and anatomopathological aspects - case report. ARQ BRAS MED VET ZOO 2021. [DOI: 10.1590/1678-4162-12336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT This report describes clinical, ultrasonographic and anatomopathological findings in a case of metastatic melanoma in an adult Saanen goat. Clinically, the goat had apathy, an intra-abdominal palpable firm structure, and exophytic keratinized areas on the skin of the udder. Ultrasound revealed non-encapsulated oval structures, with heterogeneous echogenicity and marked central and peripheral vascularization, and hypoechoic hepatic multifocal to coalescent areas. In the udder, there were non-encapsulated oval structures with heterogeneous echogenicity and hyperechoic center surrounded by hypoechogenic tissue. Grossly, there were black multifocal to coalescent areas in the liver, as well as black nodules in mammary and mesenteric lymph nodes, uterus, spleen, and myocardium. Microscopically, multifocal melanocytic neoplastic proliferation was observed in the dermis and junction of the udder epidermis. Most of the neoplastic cells had cytoplasmic granules of melanin. In the liver there were areas of neoplastic tissue compressing the adjacent parenchyma, with central foci of necrosis, mild desmoplasia, and multifocal infiltration of malignant cells into the adjacent tissues. Similar findings were observed in the mammary and mesenteric lymph nodes, uterus, spleen, and myocardium, which characterized metastatic melanoma. Ultrasonography played a key role for establishing the diagnosis of a metastatic melanoma and helped establish a proper clinical management protocol.
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Affiliation(s)
| | | | | | - M.I. Souza
- Universidade Federal Rural de Pernambuco, Brazil
| | | | | | - R.L. Santos
- Universidade Federal de Minas Gerais, Brazil
| | - A. Arenales
- Universidade Federal Rural de Pernambuco, Brazil
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