Trematodes Flashcards
Oriental blood fluke
Schistosoma japonicum
Intermediate host of Schistosoma japonicum
Oncomelania quadrasi (freshwater snail)
A zoonotic disease involving portal and mesenteric vessels
Schistosomiasis
Infective stage of blood flukes
Cercaria
Oriental lung fluke
Paragonimus westermani
DOC of Schistosomiasis
Praziquantel
Causes liver cirrhosis and presence of S. japonicum egg in stool
Granuloma formation
Parasite that causes portal hypertension and ascites
S. japonicum
Most common causes of death in Schistomiasis
Variceal bleeding
Liver failure
Chronic restrictive condition of lung from pneumonitis caused by blood fluke
Cor pulmonale
Egg infestation in Vatson’s plexus leads to:
CNS schistosomiasis
Diagnostic tests for schistosomiasis
Rectal/ liver biopsy
Concentration method in stool exam
Immunodx
DOC for Schistosomiasis
High-dose praziquantel
MOT of Paragonimus westermani
Ingestion of crabs (Sundathelpusa philippina)
Infective stage of Paragonimus westermani
metacercariae
Only trematode with only one intermediate host
Schistosoma japonicum
Parasite where egg can be found in sputum
Paragonimus westermani
Parasite that can cause hemoptysis, jacksonian epilepsy and meningitis
Paragonimus westermani
Dx test for Paragonimus westermani infx
Concentrated sputum exam
DOC for Paragonimus westermani infestation
Praziquantel
MOT of Fasciolopsis buski
Ingestion of metacercariae in aquatic plants
Most common aquatic plant where intestinal fluke can be transmitted
Ipomea obscura (kangkong)
MOT of Echinostoma ilocanum
Ingestion of metacercaria in raw snails (Pila luzonica/ kuhol/ escargot)
Minute intestinal flukes
Heterophyes
Metagonimus
Haplorchis yokogawai
MOT of minute intestinal flukes
Ingestion of raw fish
Liver flukes
Fasciola hepatica
Fasciola gigantica
Triad of symptoms in liver fluke infestation
Hypereosinophilia
Hepatomegaly
Sudden onset of high fever
DOC for Fascioliasis
Triclabendazole
Causes cholangiocarcinoma and gall bladder adenoCA
Opisthorchiasis
MOT for Clonorchis sinensis infx
Ingestion of raw Cyprinoid fish
Parasite that can enter unbroken skin
Schistosoma japonicum
