## **Core Concept**
Chronic granulomatous disease (CGD) is a disorder characterized by the inability of phagocytic cells to kill certain bacteria and fungi due to a defect in the production of reactive oxygen species (ROS). This condition increases the susceptibility to infections, including liver abscesses. Liver abscesses in CGD are often caused by specific pathogens.

## **Why the Correct Answer is Right**
The correct answer, **B. Burkholderia cepacia**, is a common cause of liver abscesses in patients with CGD. This is because CGD patients have impaired phagocytic function, making them more susceptible to infections with catalase-positive organisms like *Burkholderia cepacia*. This organism can survive the phagocytic process due to its catalase enzyme, which breaks down hydrogen peroxide.

## **Why Each Wrong Option is Incorrect**
- **Option A:** *Streptococcus pneumoniae* is not typically associated with liver abscesses in CGD. While *S. pneumoniae* can cause infections in CGD patients, it more commonly causes pneumonia, meningitis, or otitis media.
- **Option C:** *Escherichia coli* can cause various infections, including liver abscesses, but it is not the most common cause in CGD patients. *E. coli* is more commonly associated with urinary tract infections and sepsis.
- **Option D:** *Staphylococcus aureus* can cause skin and soft tissue infections, osteomyelitis, and bacteremia, but it is not the most characteristic cause of liver abscesses in CGD.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that CGD patients are particularly susceptible to infections with catalase-positive bacteria and certain fungi. *Burkholderia cepacia* and *Staphylococcus aureus* are notable pathogens in this context, but *Burkholderia cepacia* is especially associated with liver abscesses.

## **Correct Answer:** . **Burkholderia cepacia**