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Hepatic lipomas and myelolipomas in subsistence-harvested bowhead whales Balaena mysticetus, Alaska (USA): a case review 1980-2016.

https://arctichealth.org/en/permalink/ahliterature290209
Source
Dis Aquat Organ. 2017 Dec 19; 127(1):71-74
Publication Type
Journal Article
Date
Dec-19-2017
Author
Raphaela Stimmelmayr
David Rotstein
Mauricio Seguel
Nicole Gottdenker
Author Affiliation
North Slope Borough Department of Wildlife Management, Barrow, Alaska 99723, USA.
Source
Dis Aquat Organ. 2017 Dec 19; 127(1):71-74
Date
Dec-19-2017
Language
English
Publication Type
Journal Article
Keywords
Alaska
Animals
Female
Lipoma - epidemiology - pathology - veterinary
Liver Neoplasms - epidemiology - veterinary
Male
Myelolipoma - epidemiology - veterinary
Whales
Abstract
We describe a case series of benign hepatic fatty tumors in 10 subsistence-harvested bowhead whales. Microscopic features included lipomatous and myelolipomatous masses. Extensive atrophy and/or destruction of hepatic parenchyma was not observed. No other significant disease was present except in an animal with unrelated chronic pleuritis. Based on our longitudinal case series (1980-2016) which identified 1-2 hepatic lipomas and myelolipomas in landed whales annually at Barrow, Alaska (USA), since 2012, hepatic lipomas and myelolipomas are occasionally seen in hunter-harvested bowhead whales. A conservative estimate for the percentage of bowhead whales with hepatic fatty tumors in landed whales in Barrow from 2012 to 2016 was 6% (7/111). The pathogenesis and exact cell origin of these benign fatty tumors in bowhead whales is undetermined. Assessment of further cases is warranted to better define the tissue distribution and pathogenesis of these tumors in bowhead whale liver.
PubMed ID
29256430 View in PubMed
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Pulmonary Mast Cell Tumor and Possible Paraganglioma in a Free-ranging Pacific Walrus ( Odobenus rosmarus divergens), Barrow, Alaska, USA.

https://arctichealth.org/en/permalink/ahliterature286367
Source
J Wildl Dis. 2016 Apr 28;52(2):407-10
Publication Type
Article
Date
Apr-28-2016
Author
Mauricio Seguel
Raphaela Stimmelmayr
Elizabeth Howerth
Nicole Gottdenker
Source
J Wildl Dis. 2016 Apr 28;52(2):407-10
Date
Apr-28-2016
Language
English
Publication Type
Article
Keywords
Alaska
Animals
Female
Lung Neoplasms - pathology - veterinary
Mastocytoma - pathology - veterinary
Paraganglioma - pathology - veterinary
Walruses
Abstract
We describe a pulmonary mast cell tumor in a subsistence-harvested free-ranging Pacific walrus (Odobenus rosmarus divergens). Neoplastic cells effacing a focal area of pulmonary parenchyma were characterized by rare metachromatic granules and positive staining for C-kit. We also report co-occurrence of a peribronchial mass with a morphologic and immunohistochemical profile compatible with paraganglioma.
PubMed ID
27054472 View in PubMed
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