The most common organ involved in extraintestinal amoebiasis is

Options

A. Liver
B. Lungs
C. Brain
D. Spleen

Answer

**Step-by-Step Solution:**

1. **Understanding Amoebiasis**:
- Amoebiasis is an infection caused by a protozoan parasite known as Entamoeba histolytica. It primarily affects the gastrointestinal tract.

2. **Identifying Extraintestinal Involvement**:
- While amoebiasis primarily affects the intestines, it can also lead to extraintestinal complications, meaning it can affect organs outside of the gastrointestinal tract.

3. **Common Organs Affected**:
- The question asks for the most common organ involved in extraintestinal amoebiasis. The primary organs that can be affected include the liver, lungs, brain, and spleen.

4. **Analyzing Each Organ**:
- **Liver**: The liver is the most commonly affected organ in cases of extraintestinal amoebiasis. It can develop liver abscesses due to the infection.
- **Lungs**: The lungs can also be affected, but they are less commonly involved than the liver.
- **Brain and Spleen**: These organs are not typically affected by amoebiasis, as they are not part of the gastrointestinal tract.

5. **Conclusion**:
- Based on the information, the most common organ involved in extraintestinal amoebiasis is the **liver**.

**Final Answer**: The most common organ involved in extraintestinal amoebiasis is the **liver**.

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