Microbiology Quiz #36, Protozoal Diseases 

1. A 32-year-old man with HIV presents with severe, watery diarrhea. Stool analysis reveals acid-fast organisms. An image of the associated organism is shown below. Which of the following organisms is the most likely cause of his symptoms? 

Question 1 of 5

2. A patient presents with diarrhea, liver abscess, and weight loss. Colonoscopy reveals flask-shaped ulcers. Which of the following is the most likely diagnosis?

Question 2 of 5

3. A 25-year-old woman presents with foul-smelling, greasy stools and abdominal bloating. She recently returned from a hiking trip where she consumed untreated stream water. Which of the following is the most appropriate initial test to diagnose her condition?

Question 3 of 5

4. A patient with a history of giardiasis now presents with persistent symptoms despite treatment. Which of the following is the most appropriate next step in management?

Question 4 of 5

5. Which of the following treatments is indicated for a diagnosed case of amebiasis with evidence of liver abscess?

Question 5 of 5


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