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Clinical utility of high-resolution pulmonary computed tomography in children with antibody deficiency disorders
1Department of Diagnostic Imaging, Hospital for Sick Children, 555 University Ave., Toronto, Ontario M5G 1X8, Canada.
Insights
High-resolution computed tomography (HRCT) helps assess lung disease in children with antibody deficiency. HRCT findings correlate with clinical factors, guiding more aggressive management for higher-risk patients.
Area of Science:
- Pediatric Pulmonology
- Radiology
- Immunology
Background:
- Antibody deficiency states can lead to significant lung disease in children.
- Early and accurate assessment of lung involvement is crucial for effective management.
Purpose of the Study:
- To evaluate the utility of high-resolution computed tomography (HRCT) in determining the extent and severity of lung disease in pediatric patients with antibody deficiency.
- To explore correlations between HRCT findings and clinical parameters.
Main Methods:
- Retrospective analysis of 70 HRCT scans from 37 children with antibody deficiency disorders.
- Scoring of HRCT scans using a demerit system (0-25) to quantify disease severity.
- Assessment of correlations between CT scores and clinical factors like age, immunoglobulin type, respiratory history, therapy, and pulmonary function tests (PFTs).
Main Results:
- 22 out of 37 children had abnormal HRCT scans (score ≤ 22), with bronchiectasis predominantly in the lower and right middle lobes.
- Significant correlations were observed between lung disease severity (CT score) and the duration of respiratory symptoms, therapy success, and PFT results.
- Four of seven children showed improved HRCT scores following high-dose intravenous immunoglobulin therapy.
Conclusions:
- HRCT is a valuable tool for assessing lung disease extent and severity in children with antibody deficiencies at diagnosis and during treatment.
- Correlations with clinical factors indicate that HRCT can help identify high-risk patients requiring more intensive management strategies.
Objective:
To assess the value of high-resolution computed tomography (HRCT) in determining the extent and significance of lung disease in children with antibody deficiency states.
Materials And Methods:
Seventy HRCT scans performed on 37 children with various antibody deficiency disorders over a 5-year period were retrospectively scored using a previously described demerit scoring system (0-25 with 0 = worst, 25 = best). Points are subtracted from 25 with increasing severity of disease. The potential correlations between CT scores and clinical factors, including age at diagnosis, age at CT, type of immunoglobulin deficiency, length of respiratory symptoms before diagnosis, number of pneumonias before diagnosis, type, length and success of therapy, patient compliance and pulmonary function tests (PFTs), were assessed.
Results:
Of the 37 children, a demonstrated 22 abnormal scans (CT score < or = 22). All nine demonstrated bronchiectasis with a lower lobe and right middle lobe predominance. Statistically significant correlations were seen between severity of lung disease (CT score) and length of respiratory symptoms before diagnosis (p = 0.01), success of therapy (P = 0.001) and PFTs (P = 0.0008). Of seven children who were followed with repeated scans, 4 of the 7 demonstrated CT scores which improved on high-dose intravenous immunoglobulin replacement therapy.
Conclusion:
HRCT is a useful adjunct to demonstrate the extent and severity of lung disease at diagnosis and during therapy. Correlation with clinical factors suggests a higher risk group needing more aggressive management.