Helminths

Question 1

Schistosoma mansoni and haematobium

Answer 1

Mansoni lateral spine, haematobium central spine
Schistosomiais: swimmers itch, katayama syndrome: intestinal inflammation, leukocytosis, elevated evels of immunoglobulins, inflammatory and fibrotic reactions
Microscopy of stool, serology
Skin penetration

Question 2

Strongyloides stercoralis

Answer 2

Roundworm
Pulmonary and intestional manifestations, strongyloidiasis
Auto-infection
Serology, larvae in stool or duodenal aspirates
Penetration of skin

Question 3

Taenia saginata and solium

Answer 3

Tapeworm
Taeniasis, cysticercosis, meningoencephaitic syndrome with eosinophilia
Stool microscopy, biopsy
Oral ingestion

Question 4

Echinococcus granulosus

Answer 4

Cestodes
Human is intermediate host
Enlarged liver, rupture of cysts
Serology, radiology
Fecal-oral infection

Question 5

Ascaris lumbricoides

Answer 5

Earthworm sized
Asymptomatic, malabsorption
Eggs viable up to 6 years
Stool eximination
Oral

Question 6

Hookworm

Answer 6

Anemia, iron deficiency
Adult worm can live in gut for years, blood loss significant
Eggs in stool
Skin penetration

Question 7

Trichuris trichiuria

Answer 7

Roundworm
Abdominal pain and diarrhea
Local colonic ulceration, hemorrhage
Oral contamination
Stool microscopy for eggs

Question 8

Skin penetration

Answer 8

Hookworm
Strongyloides stercoralis
Schistosoma