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Platynosomum fastosum-induced chronic intrahepatic cholangitis and Spirometra spp. infections in feral cats from Grand Cayman.

Abstract
The occurrence of platynosomiasis and intestinal sparganosis is described in feral cats from Grand Cayman, Cayman Islands. Spirometra spp. was observed within the intestine of 18.18% (10/55) of cats; 1.18% (1/55) of cats demonstrated gross and histological manifestation of parasitism by Platynosomum fastosum, but 14.5% (8/55) of cats had the characteristic pathological manifestations of P. fastosum-induced intrahepatic cholangitis without the concomitant presence of the intraductal trematode. Combined parasitism (Spirometra spp. and P. fastosum) was observed in 9.09% (5/55) of feral cats. Significant pathological findings were only associated with the hepatic fluke, P. fastosum, and were grossly characterized by moderate hepatomegaly with enlarged and dilated bile ducts. Examples of cestodes with morphological features characteristic of Spirometra spp. were observed within the small intestine without any associated pathological lesion. The histopathological evaluation of liver fragments revealed chronic intrahepatic cholangitis with and without the associated intraductal trematode, and was characterized by marked periductal fibrosis, adenomatous proliferation of bile duct epithelium, dilation of intrahepatic bile ducts and portal accumulations of inflammatory cells. The occurrence of the cestode in feral cats coupled with factors that are unique to Grand Cayman makes this island the ideal location for sporadic cases of human sparganosis.
AuthorsS A Headley, M A Gillen, A W D Sanches, M Z Satti
JournalJournal of helminthology (J Helminthol) Vol. 86 Issue 2 Pg. 209-14 (Jun 2012) ISSN: 1475-2697 [Electronic] England
PMID21729387 (Publication Type: Journal Article)
Topics
  • Animals
  • Animals, Wild
  • Cat Diseases (parasitology, pathology)
  • Cats
  • Cestode Infections (parasitology, pathology, veterinary)
  • Cholangitis (parasitology, pathology, veterinary)
  • Coinfection (parasitology, pathology, veterinary)
  • Female
  • Liver (pathology)
  • Male
  • Platyhelminths (isolation & purification)
  • Spirometra (isolation & purification)
  • West Indies

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