Liver recognition Flashcards
What liver cestode is this?
Echinococcus Granulosus - only 3 proglottids - very short
Which cestode egg is this?
Echinococcus Granulosus
can be dispersed further by vectors
highly resistant
susceptible to drying
What is this?
Echinococcus cyst in liver
hydatid cyst
can incubate for months-years
sheep - liver and lungs
horse - liver
cow - lungs
What does this LC belong to?
Echinococus Granulosus (liver cestode)
mainly in human liver
have different strains between different hosts
Sheep strain - between sheep(intermediate) and dogs important - can be zoonotic
Horse strain - donkeys/mules at intermediate and dogs as final - hunt kennels - not zoonotic
What liver cestode is this?
Echinococus Multilocularis
5 proglottids
sac like uterus
Final : fox(urbanisation) , dog , cat
Intermediate: rodents ( can be human)
Alveolar cyst mainly in liver
not in UK
What subgroup of trematodes is this?
Digenea
all parasitic
small, dorsoventrall flatenned, no segments, have 2 suckers, hermaphrodites
incl. Fasciola
What liver parasite does this LC belong to?
Fasciola Hepatica (liver fluke - trematode)
hatching requires light and water
sporocyst and redia - asexual multiplication
cercaria - motile in environment
about 6-7 weeks in snail
ppp=8-12 weeks
patent for 9 months in cattle, more in sheep
Snail = Galba Truncatula
What parasite group does this represent?
Trematodes
egg larger than strongyle
What other important liver fluke is this?
Dicrocoelium Dendriticum
land snail and wood ant intermediate
no liver migration (straight to bile duct) so less pathogenic than fasciola
has no spines on tegument (fasciola has spines)
