Schistosoma Flashcards
Schistosoma are called ??
Blood flukes
S haematobium disease ??
As urinary bladder - UTI
Blood flukes example ??
- S mansoni
- S japonicum
- S haematobium
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How to differentiate the 3 species of schistosoma ?
Microscopic appearance of eggs
S japonicum
S mansoni disease ???
- Hepatomegaly
- Massive splenomegaly
- Gastrointestinal hemorrhage
- Esophageal varices bleeding
Disease caused by schistosoma ??
Schistosomiasis
/ Bilhaeziasis
S mansoni egg ??
Prominent lateral spine
S japonicum egg ?
Very small lateral spine
S haematobium egg ??
Terminal spine
When human get infected by schistosoma ?/
Free swimming , fork tailed cercariae penetrate the skin
Larvae of s is called ??
Schistomomula
Ciliated larvae is called ??
Miracidia
Life cycle of schistosoma ??
Cercariae - Larvae - Blood - S meseteric A - Portal circulation - Liver - Mesenteric venules - ( S h reach bladder through venous plexus - Female layed eggs in their respective sites
Complications of schistosomiasis
Bilhaeziasis ?
- Hematuria
- Ca of the bladder
- Granuloma in the wall of bladder
- Fibrosis in the wall of bladder
- Superimposed basterial injury UTI
Pathogenesis of S heamatobium ??
Eggs in the wall of bladder - Granuloma & fibrosis - Ca of the bladder