title: Cestode infection in 2 dogs: cytologic findings in liver and a mesenteric lymph node.
abstract: Mesocestoides cestode infections in dogs are well known for causing severe peritonitis with larvae or larval fragments (metacestodes, tetrathyridia, or calcareous corpuscles) frequently observed cytologically in peritoneal fluid samples. This case report describes the cytologic and clinical features of 2 dogs infected with cestode larvae, with one case confirmed and the other presumed to be Mesocestoides sp. In these 2 unusual cases, cestode larvae or larval fragments were found in fine-needle aspirates of the liver and a mesenteric lymph node, but no organisms were found in peritoneal fluid samples. The data presented in this report indicate that clinical pathologists should not rule out Mesocestoides sp cestodiasis based on the absence of larvae in peritoneal fluid samples from dogs.
authors.affiliation: Antech Diagnostics, Irving, TX 75063, USA. penny.patten@antechmail.com
authors.forename: Penny K
authors.initials: PK
authors.lastname: Patten
authors.forename: Lon J
authors.initials: LJ
authors.lastname: Rich
authors.forename: Karen
authors.initials: K
authors.lastname: Zaks
authors.forename: Melissa
authors.initials: M
authors.lastname: Blauvelt
mesh_terms: D000818:Animals; D000871:Anthelmintics / Q000627:therapeutic use; D001202:Ascitic Fluid / Q000469:parasitology / Q000473:pathology; D044963:Biopsy, Fine-Needle / Q000662:veterinary; D002590:Cestode Infections / Q000188:drug therapy / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*; D004283:Dog Diseases / Q000188:drug therapy / Q000469:parasitology* / Q000473:pathology; D004285:Dogs; D005273:Fenbendazole / Q000627:therapeutic use; D007814:Larva; D008099:Liver / Q000469:parasitology / Q000473:pathology; D008198:Lymph Nodes / Q000469:parasitology / Q000473:pathology; D008297:Male; D008643:Mesentery; D008645:Mesocestoides / Q000302:isolation & purification*; D010538:Peritonitis / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*; D011223:Praziquantel / Q000627:therapeutic use
chemical_list: D000871:Anthelmintics; D005273:Fenbendazole; D011223:Praziquantel