Trematodes

Question 0

Snail (Antemelania asperata) and crab (Sundathelphora philippina)
Ingested with raw crab
Lung
Praziquantel

Answer 0

Paragonimus westermani

Question 1

Snail (Oncomelania hupensis quadrasi)
Penetrate skin
Liver
Praziquantel

Swimmer’s itch, katayama fever, CLD

Answer 1

S. japonicum

Question 2

Snail (Parafossarulus) and fish (Cyprinidae)
Ingested raw fish
Liver, fibrosis of biliary tree
Praziquantel

Tender hepatomegaly, cholangiocarcinoma (klatskin tumor)

Answer 2

Clonorchis sinensis

Question 3

S. japonicum
IS:
Dx S:

Answer 3

S. japonicum
IS: cercariae
Dx S: eggs in feces (Kato-Katz, circumoral precipitin test)

Question 4

P. westermani
IS:
Dx S:

Answer 4

Metacercaria/ unembryonated egg (tertiary NaOH preparation)

Question 5

C. sinensis
IS:
Dx S:

Answer 5

Metacercariae/ Embryonated egg (direct fecal smear, K permanganate stain)

Question 6

Obstructive jaundice and painful pharyngitis (halzoun)

Answer 6

Fasciola hepatica

Aquatic plants

Question 7

Worm intoxication (anasarca and coma)

Answer 7

Fasciolopsis buski

Aquatic plant

Question 8

Mimics peptic ulcer dse

Raw fish containing cyst

Answer 8

Heterophyes heterophyes