micro

Question 1

what is the presentation of stronglyloides infection

Answer 1

Larvae from the nematode S. stercoralis penetrate the skin and cause cutaneous inflammation (“ground itch” since the feet are the most common site of initial infection). Adult worms in the intestine cause inflammation and malabsorption, and can migrate to the lungs.

Question 2

what is the presentation of ascaris infection

Answer 2

After oral ingestion, migration of larvae through the lungs may cause respiratory symptoms and eosinophilic pneumonitis. In later phases, ascariasis has intestinal, hepatobiliary, and/or pancreatic manifestations. However, the eggs do not have a spine.

Question 3

what is the presentation of schistosoma mansoni infection

Answer 3

uke are released from the snail and penetrate human skin, after which they travel through the circulatory system. S. mansoni tends to migrate against portal circulation towards the intestinal lumen. They are eliminated through feces or survive in the body up to decades. A heavy burden of infection may lead to colonic ulceration and iron deficiency anemia, as well as granulomatous inflammation near the sites of egg deposition.

Question 4

how is the diagnosis of schistosoma made

Answer 4

with stool demonstrating eggs with lateral spine