Tropis_Tissue helminth6_capillaria, fasciola.pdf

7/28/2019 Tropis_Tissue helminth6_capillaria, fasciola.pdf

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Parasite of rodents, dogs, and monkeys

Infected if eat raw meat

6/18/2012 S. Wahyuni, Parasitology Dept, Medical Faculty, Unhas 1


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In a host the ova are deposited in the liver

fully embryonated within 30 days

a new host eats infected liver

the larvae after piercing the intestinal wall migrate to

t e ver

become mature in 4 weeks



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Pathogenicity

inflammatory reaction in the liver with theroduction of fibrous connective tissue

in heavy infections extensive tissuedestruction & he atic cirrhosis

microscopic examination of the liver at



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Classified as trematodes The sheep liver fluke

can infect humans

accidentally epa ca : up o x

mm

Reside in the large biliary

ducts of the mammalianhost.

Worldwide distribution



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distinct operculum inupper end of the

ellipsoidal size 120-150 x 63 to 90 m.

. The operculum can

be opened (egg C),

,operculum

have a thin shell which is slightlythicker at the abopercular end.


passe unem ryona e .


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genus Lymnae4 months



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acute hase (caused b the mi ration of the

immature fluke through the hepaticparenchyma): abdominal pain, hepatomegaly,fever vomitin diarrhea urticaria &eosinophilia can last for months.

chronic phase (caused by the adult fluke within

and reflect intermittent biliary obstruction andinflammation.

ccas ona y, ectopc ocatons o n ecton sucas intestinal wall, lungs, subcutaneous tissue,and har n eal mucosa) can occur.



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E s: in the stools or in material obtained b

duodenal or biliary drainage. False fascioliasis (pseudofascioliasis) refers to

t e presence o eggs n t e stoo resutng notfrom an actual infection but from recent ingestion

avoided by having the patient follow a liver-freediet several days before a repeat stool

examna on. Antibody detection tests are useful especially in


,.

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Tropis_Tissue helminth6_capillaria, fasciola.pdf