title: Sudden death due to thoracic lymphoma in a standardbred racing horse.
abstract: During training, a 6-year-old standardbred gelding collapsed, exhibiting severe epistaxis and agonal breathing and was euthanized. The horse had a recent history of poor performance, lethargy, and unilateral eyelid swelling with serous ocular discharge. Postmortem and histopathologic examination findings revealed thoracic lymphosarcoma and concurrent exercise-induced pulmonary hemorrhage.
authors.affiliation: Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
authors.forename: Kelly
authors.initials: K
authors.lastname: Lawn
mesh_terms: D000818:Animals; D003645:Death, Sudden / Q000209:etiology / Q000662:veterinary*; D017809:Fatal Outcome; D006470:Hemorrhage / Q000209:etiology / Q000662:veterinary; D006734:Horse Diseases / Q000175:diagnosis*; D006736:Horses; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000662:veterinary*; D008297:Male; D010805:Physical Conditioning, Animal / Q000009:adverse effects; D013899:Thoracic Neoplasms / Q000175:diagnosis / Q000662:veterinary*