Please enable JavaScript.
Coggle requires JavaScript to display documents.
Fasciola hepatica '' liver fluke'' - Coggle Diagram
Fasciola hepatica '' liver fluke''
casual agent
parasite of herbivoirs
humans are accidental host
common in south Americas
cephalic cone feature
resides in the gallbladder
life cycle
immature eggs are passed in feces
eggs mature in the water by becoming embryonated
release miracidia
miracidium invades lymnae snail-intermediate host
undergoes larvae development
sporocysts
rediae
cercariae
cercariae leaves the snail and encyst as metacercariae on aquatic plants
ingestion of the equatic plants by humans and sheep
1 more item...
infective stage= metacercariae
diagnositic stage= unembroynated eggs in the stool
clinical features
acute phase
migration of the immature fluke through the hepatic perenchyma
abdominal pain, fever, vomitting, diarrhea, hepatomegaly
eosinophilia
chronic stage
caused by the adult fluke
in the bile ducts
mechanical and toxic damage
biliary obstruction and inflammation
intermettent
pharyneal infection
from eating raw meat
pain and bleeding
intestinal wall, lungs subcutaneous tissue
diagnosis
chronic stage
identification of eggs in stool
wet mount with iodine
material from deudonal or biliary drainage
pseudofascioliasis
presence of eggs from ingestion of infected liver containing eggs
antibodies detection
when eggs are not present in the early stage
or in ectopic fasciola