Three neoplasms in a Eurasian otter (Lutra lutra): malignant melanoma, trichoblastoma and mammary gland adenoma

An eighteen-year-old female Eurasian otter became emaciated and died. Necropsy examination revealed nose and thoracic cutaneous masses, abdominal subcutaneous mass, and multiple nodules in the liver and lungs. Malignant melanoma was found in the nose cutaneous mass and to have metastasized to the li...

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Bibliographic Details
Published in:	Journal of Veterinary Medical Science p. 21-0279
Main Authors:	FUKE, Naoyuki, DIEP, Nguyen Van, HIRAI, Takuya, SUWANRUENGSRI, Mathurot, IZZATI, Uda Zahli, YAMAGUCHI, Ryoji
Format:	Journal Article
Language:	English
Published:	JAPANESE SOCIETY OF VETERINARY SCIENCE 01-11-2021
Subjects:	Eurasian otter malignant melanoma spindle cell trichoblastoma triple neoplasms
Online Access:	Get full text
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Summary:	An eighteen-year-old female Eurasian otter became emaciated and died. Necropsy examination revealed nose and thoracic cutaneous masses, abdominal subcutaneous mass, and multiple nodules in the liver and lungs. Malignant melanoma was found in the nose cutaneous mass and to have metastasized to the liver, lungs, kidneys, adrenal glands, mammary glands and left mandibular lymph node. The neoplastic cells were labeled for vimentin, melanoma, and S100. The cutaneous mass in the thoracic area consisted of spindle shaped neoplastic epithelial cells and was diagnosed as trichoblastoma. Mammary gland adenoma was observed in the abdominal subcutaneous mass. This is the first report of primary three neoplasms of malignant melanoma, trichoblastoma and mammary gland adenoma in a Eurasian otter.
ISSN:	0916-7250 1347-7439
DOI:	10.1292/jvms.21-0279