title: Pulmonary Mast Cell Tumor and Possible Paraganglioma in a Free-ranging Pacific Walrus ( Odobenus rosmarus divergens), Barrow, Alaska, USA.
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.
authors.affiliation: 1 Department of Pathology, College of Veterinary Medicine, University of Georgia, 501 D. W. Brooks Dr., Athens, Georgia 30602, USA;
authors.forename: Mauricio
authors.initials: M
authors.lastname: Seguel
authors.affiliation: 2 North Slope Borough Department of Wildlife Management, PO Box 69, Barrow, Alaska 99723, USA;|3 Institute of Arctic Biology, University of Alaska Fairbanks, 902 N Koyukuk Dr., PO Box 757000, Fairbanks, Alaska 99775-70, USA;
authors.forename: Raphaela
authors.initials: R
authors.lastname: Stimmelmayr
authors.affiliation: 1 Department of Pathology, College of Veterinary Medicine, University of Georgia, 501 D. W. Brooks Dr., Athens, Georgia 30602, USA;
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Howerth
authors.affiliation: 1 Department of Pathology, College of Veterinary Medicine, University of Georgia, 501 D. W. Brooks Dr., Athens, Georgia 30602, USA;
authors.forename: Nicole
authors.initials: N
authors.lastname: Gottdenker
mesh_terms: D000413:Alaska; D000818:Animals; D005260:Female; D008175:Lung Neoplasms / Q000473:pathology / Q000662:veterinary*; D034801:Mastocytoma / Q000473:pathology / Q000662:veterinary*; D010235:Paraganglioma / Q000473:pathology / Q000662:veterinary*; D014856:Walruses