Schistosomiasis and other flukes

Question 1

Definitive host in schistosomiasis

Answer 1

Humans: Adult worms initiate sexual reproduction

Question 2

Intermediate host

Answer 2

Snails: Asexual multiplication of larvae

Question 3

Intestinal schistosomas

Answer 3

S.mansoni
S.japnicum
S.mekongi
S.intercalatum

Question 4

Urinary schistosoma

Answer 4

S.haematobium

Question 5

Schistosomiasis with HIV treatment

Answer 5

Praziquantel

may result in dec HIV replication and inc CD4 cells

Question 6

Stages of disease manifestations

Answer 6

Phase of cercarial invasion
Phase of acute schistosomiasis
Chronic schistomiasis

Question 7

May be associated with squamous cell carcinoma of the bladder

Answer 7

S.haematobium

Question 8

May cause CNS schistosomiasis

Answer 8

S.japonicum

Question 9

Causes transverse myelitis

Answer 9

S.mansoni

S.haematobium

Question 10

High-level peripheral-blood eosinophilia + positive serologic assay for schistosomal antibodies

Answer 10

Katayama fever

Question 11

DOC for schistosomiasis

Answer 11

Praziquantel

Question 12

Associated with cholangiocarcinoma

Answer 12

Chlonorchis sinensis
Opistorchiasis

*ingestion of inadequately cooked freshwater fish

Question 13

Endemic in sheep-raising countries; CT may show migratory tracks

Answer 13

Fascioliasis

Question 14

Associated with ingestion of crayfish and freshwater crabs

Answer 14

Paragonimus westermani