title: Fatal extraintestinal toxoplasmosis in a young male cat with enlarged mesenteric lymph nodes.
abstract: A 22-month-old indoor/outdoor neutered male domestic short-haired cat had a history of progressive lethargy, vomiting, and decreased appetite. Abdominal ultrasound revealed an irregular hyperechoic mass in the mid-abdomen. He was unresponsive to symptomatic medical management and was euthanized after 3 days of hospitalization. A diagnosis of disseminated extraintestinal toxoplasmosis was made based on the finding of intracytoplasmic protozoan parasites on histopathological examination of mesenteric lymph nodes, hepatic and intestinal samples, and on immunohistochemistry.
authors.affiliation: Department of Clinical Studies (Cohen, Blois), Animal Health Laboratory, Laboratory Service Division (Vince), Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
authors.forename: Tamara M
authors.initials: TM
authors.lastname: Cohen
authors.affiliation: Department of Clinical Studies (Cohen, Blois), Animal Health Laboratory, Laboratory Service Division (Vince), Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
authors.forename: Shauna
authors.initials: S
authors.lastname: Blois
authors.affiliation: Department of Clinical Studies (Cohen, Blois), Animal Health Laboratory, Laboratory Service Division (Vince), Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Vince
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000401:mortality / Q000469:parasitology* / Q000473:pathology; D002415:Cats; D008198:Lymph Nodes / Q000473:pathology*; D008297:Male; D014124:Toxoplasmosis, Animal / Q000401:mortality / Q000473:pathology*