Fasciola
-common parasites of herbivores and raw liver
-habitat….bile duct
- infective stage encysted metacercaria
-diagnostic stage …eggs(ovale immature..operculated)
-intermediate host…lymnea snail
-pathogenesis:--hyperplasia of bile duct epithelium
-fibrosis
notes:-
1-suprious(false)fascioliasis:-ingestion of dead fasciola in ifected liver,without actual infection or clinical manifestation but detect eggs in stools
2-halzoun:-when eating raw liver, liver fasciola attach to mucosa of pharynx,press
on larynx leading to dyspnea ,asphyxia
treatment:- fasinex(kill
immature ,adult)1
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Heterophys Heterophys
من الديدان الموجودة فى مصروالشرق الأقصى
Defenitive Host: man,cats,dogs,fish eating birds
Habitat:small intestine inbetween villi
Infective stage:encysted metacecaria through
ingestion of un*****d fish
Diagnostic stage:mature oval operculated eggs
1intermediate host.....pirenella conica
2nd intermediate host..............fish(bory...bolty) be carfull
Pathogenesis:catarrhle inflammation,ulcers,necrosis
Manifestations:-mild...........asymptomatic
heavy...................abdominal colics,diarrhea,nausea,vomitting,epigastric pain
Complications:eggs may distribute to brain capillaris
causing neurological manifestation
or to Heart causing myocardial infarction
Treatment:praziquantel
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Paragonimus westermani
تنتشر فى وسط أفريقيا والشرق الأقصى
Definitive host:-human ,carnivores
Habitat:-inside lung
Life cycle
Infective stage:-through eating unwell *****d cray fish or crabs containing infected encysted metacercaria
Diagnostic stage:- immature oval operculated eggs
1st intermediate stage...snail(melanea tuberculata
)
2nd intermediate host:-crabs or cray fish
Pathogenesis:-lung fibrosis andtubercle like abscess in lung tissue and
leukocytic infiltration
Manifestation :-
fever,eosinophilia,cough with rusty sputum
haemoptysis,bronchiectasis,pneumonia
Complications:-
Cerebral by larva,lung fibrosis
Diagnosis:-stool,sputum(2for eggs)0
serology in ectopic foci
Treatment:-
Praziquantel
الخميس 21 أغسطس - 8:25
