title: Gross and microscopic pathology associated with large cavernous lesions in muscle of Chinook salmon from Lake Ontario.
abstract: Since 1999, eight adult Chinook salmon (Onchorhynchus tshawytscha) from Lake Ontario with large, focal, cavernous, fluid-filled muscle lesions have been examined in our respective laboratories. Gross and microscopic examination, cytology, and bacteriology were performed. Microscopically the lesions were consistent with chronic abscesses. Cytologic evaluation revealed diplomonad flagellate Spironucleus within these lesions. We provide a description of the gross and microscopic pathology associated with the cavernous lesions.
authors.affiliation: Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA.
authors.forename: Emily K
authors.initials: EK
authors.lastname: Meseck
authors.forename: Tracy W
authors.initials: TW
authors.lastname: French
authors.forename: Stephanie G
authors.initials: SG
authors.lastname: Grimmett
authors.forename: Susan L
authors.initials: SL
authors.lastname: Bartlett
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Wooster
authors.forename: Rodman G
authors.initials: RG
authors.lastname: Getchell
authors.forename: John H
authors.initials: JH
authors.lastname: Schachte
authors.forename: Paul R
authors.initials: PR
authors.lastname: Bowser
mesh_terms: D000818:Animals; D016828:Diplomonadida / Q000302:isolation & purification*; D005393:Fish Diseases / Q000453:epidemiology / Q000469:parasitology* / Q000473:pathology*; D018482:Muscle, Skeletal / Q000469:parasitology / Q000473:pathology / Q000648:ultrastructure; D009864:Ontario / Q000453:epidemiology; D012474:Salmon / Q000469:parasitology