PR TRM INTESTINAL & LUNG FLUKES Flashcards
Largest intestinal fluke
Fasciolopsis buski
Fasciolopsis buski
Common name
Giant Intestinal Fluke
Fasciolopsis buski
FH
Humans
Fasciolopsis buski
Reservoir Hosts
pigs, dogs, rabbits
Fasciolopsis buski
Habitat
Duodenum and jejunum (small intestine)
Fasciolopsis buski
1st intermediate host
Snails
- Segmentina, Hippeutis, Gyraulus
Fasciolopsis buski
2nd intermediate host
Water Plants
- Morning glory or kangkong
- Water caltrop
- Water chestnut
- Lotus
Fasciolopsis buski
IS
metacercaria
Fasciolopsis buski
MOT
ingestion of encysted metacercariae from aquatic plants
Fasciolopsis buski
Adult worms
Elongated, oval
Fasciolopsis buski
Suckers
Ventral sucker larger than oral sucker
Fasciolopsis buski
T/F The adult worm has a cephalic cone
F
Fasciolopsis buski
Intestinal ceca
simple and unbranched
Fasciolopsis buski
Testes and ovary
Testes : dendritic and in tandem
Ovary : branched, lies to right of midline
Fasciolopsis buski
Eggs, Operculum, Maturity
Hen’s egg appearance
Operculated
Embryonated
Fasciolopsis buski
Indistinguishable from __
Fasciola
Fasciolopsis buski
Disease Manifestation
- Intestinal Obstruction and Inflammation = bleeding
- Fasciolopsiasis
- Marked eosinophilia & malabsorption
Fasciolopsis buski
Diagnosis
DFS, FECT, Kato-Katz
Fasciolopsis buski
Treatment
Praziquantel
Echinostoma ilocanum
Common name
Garrison’s Fluke
Echinostoma ilocanum
Final host
humans
Echinostoma ilocanum
Reservoir hosts
dogs, cats, rats, pigs
Echinostoma ilocanum
Habitat
small intestine
Echinostoma ilocanum
1st intermediate host
Snails
- Gyraulus convexiusculus
- Hippeutis umbilicalis
Echinostoma ilocanum
2nd intermediate host
Pila luzonica (kuhol) and Vivipara angularis (susong pampang)
Echinostoma ilocanum
MOT
ingestion of metacercariae encysted in snails
Echinostoma ilocanum
IS
metacercaria
Echinostoma ilocanum
Adult worms (color and appearance)
- Reddish gray, tapers at the posterior end (thinner)
- Elongated and spatulate
Echinostoma ilocanum
Suckers
Ventral sucker bigger than oral sucker
Echinostoma ilocanum
Unique characteristic of sucker
- Circumoral disk
- 49-51 collar spines
- aids in attachment
Echinostoma ilocanum
Testes
deeply bilobed and in tandem
Echinostoma ilocanum
Intestinal ceca
simple and unbranched
Echinostoma ilocanum
Eggs (Color, Shape)
- Straw colored or light brown, operculated, ovoid
- Germ ball egg
Echinostoma ilocanum
Operculum, Maturity
Operculated (not observable)
Unembryonated
Echinostoma ilocanum
Size comparison to Fasciola
Fasciolopsis bigger
Echinostoma ilocanum
Disease manifestation
- Echinostomiasis : inflammation at site of attachment
- Bloody Diarrhea
- Intoxication
Echinostoma ilocanum
Diagnosis
Stool examination
- FECT
- Kato-Katz
Echinostoma ilocanum
DOC
Praziquantel