A most common organism isolated in breast abscess
**Question:** A most common organism isolated in breast abscess
**Core Concept:** Breast abscess is a localized infection in the breast tissue, typically caused by bacterial pathogens. Commonly isolated organisms include Staphylococcus species, Streptococcus species, and other facultative and anaerobic bacteria.
**Why the Correct Answer is Right:**
The correct answer is **D**. Breast abscesses are commonly caused by Staphylococcus aureus, which is a common skin contaminant and a member of the normal skin flora. Staphylococcus aureus can invade the breast tissue due to trauma or skin breaches, leading to infection.
**Why Each Wrong Option is Incorrect:**
A. **B:** Streptococcus species are less common causes of breast abscesses compared to Staphylococcus aureus.
B. **C:** The correct answer D (Staphylococcus aureus) is more likely to cause breast abscesses than the other options.
C. **B:** Other facultative and anaerobic bacteria are less commonly involved in breast abscesses than Staphylococcus aureus.
**Why Each Wrong Option is Incorrect:**
A. **A:** Streptococcus species are less common causes of breast abscesses compared to Staphylococcus aureus.
B. **C:** The correct answer D (Staphylococcus aureus) is more likely to cause breast abscesses than the other options.
C. **B:** Other facultative and anaerobic bacteria are less commonly involved in breast abscesses than Staphylococcus aureus.
**Clinical Pearl:**
Breast abscesses are important to diagnose and treat promptly to prevent complications such as cellulitis and mastitis. In cases of suspected breast abscess, consider obtaining cultures to guide targeted antibiotic therapy.
**Correct Answer:** D. Staphylococcus aureus