Trematodes: Flukes Flashcards
Echinococcus granulosis
Transmission: ingestion of eggs from dog feces
“Encysted stages, no tapeworm
Disease: cyss in liver, causing anaphylaxis if antigens released (surgeons preinject with ethanol to kill cysts before removal)”
Schistosoma mansoni, japonicum, hematobium
“Eggs with lateral spine (Mansoni)
Transmission: snails are host; cercariae (larvae) penetrate skin of humans”
““Swimmers itch”. Hematobium – hematuria.
Disease: Liver and spleen granulomas, fibrosis, and inflammation
Chronic infection with S. haemotobium can lead to squamous cell carcinoma of the bladder
S. hematobium: hematuria
S. mansoni: portal hypertension
Schistosomiasis: 1) Katayama 2) Fermatitis 3) Chronic fibrosis”
Chlonorchis Sinensis
“Transmission: Undercooked fish
Liver fluke”
Disease: biliary tract inflammation->pigmented gallstones; associated with cholangiocarcinoma
Paragonismus westermani
“Tranmission: undercooked crab meat
Lung fluke”
Disease: lung inflammation and secondary bacterial infection, with hemoptysis
