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USMLE · Question #297

A 35-year-old male comes to the physician due to watery diarrhea of two weeks' duration. He also has a low-grade fever, fatigue and weight loss of 5kg (11 lbs) over the past month. Laboratory…

The correct answer is C. cryptosporidiosis. Cryptosporidium spp are protozoa commonly associated with chronic watery diarrhea in HIV/AIDS patients with CD4 cell counts less than < 100 cells/mmֲ³. It+ causes milder diarrhea in immunocompetent hosts and can be treated with nitazoxanide and prevented by filtering the city…

UML Advanced Concepts and Foundations

Question

A 35-year-old male comes to the physician due to watery diarrhea of two weeks' duration. He also has a low-grade fever, fatigue and weight loss of 5kg (11 lbs) over the past month. Laboratory findings include a CDT cell count 70 cells/mmֲ3. The most likely diagnosis is +

Options

  • Aamebiasis
  • Bcryptococcosis
  • Ccryptosporidiosis
  • Dgiardiasis
  • Etoxoplasmosis

How the community answered

(50 responses)
  • A
    2% (1)
  • B
    2% (1)
  • C
    84% (42)
  • D
    8% (4)
  • E
    4% (2)

Explanation

Cryptosporidium spp are protozoa commonly associated with chronic watery diarrhea in HIV/AIDS patients with CD4 cell counts less than < 100 cells/mmֲ³. It+ causes milder diarrhea in immunocompetent hosts and can be treated with nitazoxanide and prevented by filtering the city water supplies. The diagnosis can be made by acid fast staining of a stool specimen which reveals the presence of acid-fast oocysts.

Topics

#immunodeficiency#opportunistic infection#parasitic infection#GI symptoms

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