Parasitology

Stool Microscopy Challenge: Helminth Egg Identification

A parasitology diagnostic challenge: identify the parasite species from a photomicrograph of a 50 µm egg found during copro-ovoscopy.

Stool sample, microscopy: parasite egg for the diagnostic challenge
Stool sample, microscopy: parasite egg for the diagnostic challenge

🐍 Parasitology challenge. An egg 50 micrometers long was found in stool. Can you identify the finding?

❗ Hint. Up to 800 million people worldwide are infected (according to WHO data). It is especially common where there is no sanitation and human feces are used as fertilizer (soil fecalization).

⚕ Clinical picture In case of light invasion: asymptomatic or mild discomfort. In case of severe invasion (in children):

  • abdominal pain, anemia
  • chronic diarrhea, weight loss
  • in severe form — rectal prolapse

In children, growth delays and cognitive impairments are possible.

🔎 THE CORRECT ANSWER TO THE CHALLENGE will be available tomorrow