Chronic suppurative lung disease in adults

Area of Science:

• Pulmonology
• Infectious Diseases
• Immunology

Background:

• Chronic suppurative lung disease (CSLD) is well-documented in children, potentially preceding bronchiectasis.
• CSLD in adults remains less described, lacking clear causative exposures.
• Distinguishing CSLD from chronic bronchitis is crucial for appropriate management.

Observation:

• Four adult patients presented with prolonged cough and purulent sputum.
• High-resolution CT scans did not reveal bronchiectasis in these patients.
• Sputum cultures identified diverse pathogens, including Gram-negative bacteria, fungi, and mycobacteria.

Findings:

• Two patients had underlying immunodeficiency, and one had Mycobacterium avium infection.
• One patient later developed bronchiectasis.
• All patients demonstrated clinical improvement with targeted therapy.

Implications:

• CSLD occurs in adults and presents distinct features from chronic bronchitis, such as unusual pathogens and lack of environmental triggers.
• Comprehensive evaluation for underlying causes like immunodeficiency is essential.
• Treating adult CSLD patients similarly to bronchiectasis patients can improve outcomes.