title: Fatal disseminated blastomycosis in a free-ranging American black bear (Ursus americanus).
abstract: An aged, free-ranging, female, radio-collared American black bear (Ursus americanus) died after an approximately 5 month long period of weight loss. Gross necropsy findings included severe diffuse pyogranulomatous bronchopneumonia, marked granulomatous lymphadenitis of tracheobronchial lymph nodes and multiple intra-abdominal lymph nodes, chronic focal jejunal ulceration, and widespread alopecia. Histopathologic examination revealed abundant fungal organisms morphologically compatible with Blastomyces sp. within pyogranulomatous inflammatory lesions in the lungs, multiple lymph nodes, liver, kidneys, jejunum, and right adrenal gland. In addition, the haircoat had a mild infestation of chewing lice (Trichodectes pinguis euarctidos), and large numbers of rhabditid nematodes consistent with Pelodera sp. were histologically observed within hair follicles.
authors.affiliation: Department of Veterinary Population Medicine/Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, USA.
authors.forename: Jaclyn A
authors.initials: JA
authors.lastname: Dykstra
authors.forename: Lynn L
authors.initials: LL
authors.lastname: Rogers
authors.forename: Susan A
authors.initials: SA
authors.lastname: Mansfield
authors.forename: Arno
authors.initials: A
authors.lastname: Wünschmann
mesh_terms: D000818:Animals; D000835:Animals, Wild; D001759:Blastomycosis / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D017809:Fatal Outcome; D005260:Female; D008910:Minnesota / Q000453:epidemiology; D001503:Ursidae