Echinococcus granulosus MCQ Quiz | Hepatic & Lymphatic Infections

1. Which of the following is the definitive host for Echinococcus granulosus?

2. Humans acquire hydatid disease by ingesting which stage of the parasite?

3. The most common site for the development of hydatid cysts in humans is the:

4. Which layer of the hydatid cyst is of host origin and represents a fibrous tissue reaction?

5. The term “hydatid sand” refers to:

6. Which imaging modality is considered the cornerstone for diagnosing and classifying hepatic hydatid cysts?

7. The “water lily sign” on a chest X-ray is pathognomonic for:

8. Which serological test for hydatidosis is known for its high specificity, often targeting the Arc 5 precipitin band?

9. What is the primary mechanism of action for albendazole in the treatment of hydatid disease?

10. The PAIR technique for hydatid cyst treatment stands for:

11. A major risk associated with the surgical removal or percutaneous treatment of a hydatid cyst is:

12. According to the WHO-IWGE ultrasound classification, a unilocular, anechoic cyst with a visible double-line sign is classified as:

13. Which of the following is an absolute contraindication for the PAIR procedure?

14. The adult worm of E. granulosus, typically 3-6 mm long, resides in which organ of the definitive host?

15. The germinal layer (endocyst) of a hydatid cyst is responsible for producing:

16. Which of the following is NOT a typical complication of a large hepatic hydatid cyst?

17. The primary public health strategy for preventing human cystic echinococcosis involves:

18. A common scolicidal agent used to instill into the cyst during surgery or PAIR is:

19. In the life cycle of E. granulosus, the oncosphere hatches from the egg in the duodenum of the intermediate host and subsequently:

20. What is the main purpose of administering albendazole peri-operatively for surgical management of hydatid cysts?

21. A “daughter cyst” within a larger hydatid cyst is characteristic of which WHO-IWGE classification stage?

22. The Casoni test, an intradermal test for hydatidosis, is based on which type of hypersensitivity reaction?

23. Which of the following findings would be most consistent with an inactive, degenerated hydatid cyst (CE4/CE5)?

24. The second most common organ affected by hydatid disease after the liver is the:

25. A patient diagnosed with hydatid disease often shows which of the following abnormalities in a complete blood count?