title: Pulmonary trematodosis (Pharyngostomoides sp.) in a juvenile raccoon (Procyon lotor).
abstract: A lethargic, wild, juvenile raccoon died and was subsequently presented for necropsy. The lungs had widely disseminated, finely granular, yellow-tan foci with moderate pulmonary, as well as, thoracic lymphadenopathy. Histopathology revealed numerous cross-sections of larval trematodes morphologically consistent with diplostomid mesocercariae and metacercariae as well as moderate alveolointerstitial pneumonia with a mixed population of eosinophils, macrophages, lymphocytes, and plasma cells. The presence of larval trematodes within lymphatics in multiple organs indicates a route of fluke migration. Live specimens of mesocercariae and metacercariae recovered from refrigerated lung tissue after 7 days were identified as Pharyngostomoides sp., an intestinal diplostomid parasite (trematode) of raccoons and other mammals that is similar in appearance and life cycle to Alaria spp.
authors: Department of Veterinary Population Medicine, College of Veterinary Medicine, 244 Veterinary Diagnostic Laboratory, University of Minnesota, 1333 Gortner Avenue, St. Paul, MN 55108, USA. olso1183@umn.edu
authors: Erik J
authors: EJ
authors: Olson
authors: Gary A
authors: GA
authors: Conboy
authors: Bert E
authors: BE
authors: Stromberg
authors: David W
authors: DW
authors: Hayden
mesh_terms: D000818:Animals; D000835:Animals, Wild / Q000469:parasitology*; D005260:Female; D007814:Larva; D008168:Lung / Q000469:parasitology / Q000473:pathology; D008174:Lung Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary*; D011821:Raccoons / Q000469:parasitology*; D014200:Trematoda / Q000033:anatomy & histology / Q000502:physiology*; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary*