Radiologic progression with minimal functional decline in cystic fibrosis: Insights from a prospective study

Area of Science:

• Pulmonology
• Radiology
• Medical Imaging

Background:

• Effective management of cystic fibrosis (CF) relies on timely identification and monitoring of lung disease progression.
• Pulmonary function tests (PFTs) and high-resolution computed tomography (HRCT) are standard tools for assessing CF lung disease.
• Identifying the most sensitive and reliable assessment modality is crucial for developing monitoring guidelines, especially in regions like India lacking national protocols.

Purpose of the Study:

• To evaluate lung disease progression in cystic fibrosis patients.
• To compare the sensitivity of HRCT and PFTs in detecting disease progression over one year.

Main Methods:

• 32 CF patients were prospectively followed for one year.
• Clinical and physiological parameters, including spirometric indices and HRCT Bhalla scores, were assessed at baseline and follow-up.
• Paired t-tests and Pearson correlation were used to analyze changes and relationships between HRCT and PFTs.

Main Results:

• HRCT Bhalla scores significantly increased by 50% over one year (P < 0.001), indicating radiological progression.
• Spirometric parameters (FEV1, FVC, FEV1/FVC) showed non-significant declines (2.9%-5.2%, P > 0.05).

Conclusions:

• HRCT is a sensitive tool for detecting structural lung damage progression in CF patients.
• PFTs may be less sensitive in identifying progressive structural deterioration compared to HRCT.
• HRCT aids in early detection of worsening lung disease and effective disease monitoring in CF.