Imaging in Asthma-Chronic Obstructive Pulmonary Disease Overlap.

Area of Science:

• Pulmonary Medicine
• Radiology
• Respiratory Diseases

Background:

• Asthma-COPD overlap (ACO) presents a diagnostic challenge, often exhibiting features of both asthma and chronic obstructive pulmonary disease (COPD).
• Accurate identification of ACO is crucial for appropriate patient management and treatment strategies.
• Imaging modalities play a significant role in the differential diagnosis of respiratory conditions.

Purpose of the Study:

• To review the characteristic imaging findings in patients diagnosed with asthma-COPD overlap (ACO).
• To synthesize and evaluate existing imaging studies that compare ACO patients with those having isolated asthma or COPD.
• To identify knowledge gaps in ACO understanding that advanced imaging techniques could potentially address.

Main Methods:

• Literature review of imaging studies focusing on asthma-COPD overlap.
• Comparative analysis of imaging features across ACO, asthma, and COPD cohorts.
• Synthesis of findings to identify trends and discrepancies in the literature.

Main Results:

• Existing imaging studies show variable patterns in ACO, often reflecting a mix of features from both asthma and COPD.
• Certain imaging findings may help differentiate ACO from single diagnoses, though overlap exists.
• Further research is needed to establish definitive imaging biomarkers for ACO.

Conclusions:

• Imaging plays a vital role in the assessment of patients with potential asthma-COPD overlap.
• Current literature provides a foundation, but more targeted imaging research is required to refine diagnostic criteria for ACO.
• Future imaging studies should aim to resolve remaining diagnostic uncertainties and guide therapeutic decisions in ACO patients.