Clinical Features of Lung Abscess Associated with Red Complex Bacterial Infections

Background

Lung abscesses are severe infections often resulting from aspiration of oral flora, with red complex bacteria being significant yet underrecognized pathogens. Accurate identification of these anaerobic organisms is crucial for effective treatment, especially given the limitations of traditional culture methods. The use of mNGS represents a significant advancement in diagnosing such infections.

Data Highlights

No numerical or trial data was provided in the source material.

Key Findings

• A 63-year-old male presented with chronic cough and hemoptysis, initially suspected to have lung cancer.
• Chest CT revealed a spiculated mass in the right upper lobe, with negative sputum cultures.
• mNGS identified Treponema denticola and Porphyromonas gingivalis as the causative pathogens.
• The patient was treated with intravenous piperacillin-tazobactam followed by oral amoxicillin-clavulanate, leading to recovery.

Clinical Implications

Clinicians should consider the potential role of red complex bacteria in lung abscesses, especially in culture-negative cases.

Conclusion

This case underscores the significance of recognizing oral anaerobes in lung abscesses.

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