Nematodes

Question 0

Giant roundworms of man

Loeffler’s syndrome (hypersensitivity pneumonitis)

Answer 0

Ascaris lumbricoides
Transmission: embryonated egg
IS: embryonated egg
DxS: fertilized egg (direct fecal smear, kato-Katz)

Question 1

Nematodes with transpulmonary phase

Answer 1

Ascaris
Nicator
Ancyclostoma
Strongyloides

Question 2

Hookworm
Blood sucking
Ground itch, cutaneous larva migrans
Microcytic anemia, hypoalbuminemia

Answer 2

Necator americanus, ancyclostoma doudenale
Larvae penetrate skin
IS: filariform larvae
Dx S: eggs in feces
Albendazole