in case of human beings hydatid cysts occur over

Options

A. Stomach
B. liver
C. Lungs
D. Both B and C

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where hydatid cysts occur in human beings. Hydatid cysts are associated with a specific parasitic infection.

2. **Identifying the Parasitic Cause**: The disease related to hydatid cysts is known as cystic echinococcosis, which is caused by the tapeworm Echinococcus granulosus.

3. **Location of Hydatid Cysts**: Hydatid cysts primarily develop in the liver and lungs of humans. This is due to the life cycle of the Echinococcus granulosus, which involves these organs as sites for cyst formation.

4. **Symptoms Associated with Cysts**:
- If the cyst is in the liver, symptoms may include abdominal pain, nausea, and vomiting.
- If the cyst is in the lungs, symptoms may include chest pain and shortness of breath.

5. **Evaluating the Options**: The options provided are:
- A) Stomach
- B) Liver
- C) Lungs
- D) Both B and C

Since hydatid cysts occur in both the liver and lungs, the correct answer is option D (Both B and C).

6. **Conclusion**: Therefore, the hydatid cysts in human beings occur over the liver and lungs, making option D the correct answer.

---