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Extrinsic airway compression secondary to pulmonary arterial conduits: MR findings
L F Donnelly1, J L Strife, W W Bailey
1Department of Radiology, Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
Insights
Extrinsic airway compression can occur in children after heart surgery due to vascular structures or masses. Magnetic resonance (MR) imaging is a valuable tool for diagnosing this condition, especially when chest X-rays are inconclusive.
Area of Science:
- Medical Imaging
- Pediatric Cardiology
- Thoracic Surgery
Background:
- Extrinsic airway compression can result from vascular abnormalities or masses near the airway.
- Children with congenital heart disease undergoing surgery are at risk for airway compression from prosthetic devices or altered anatomy.
Observation:
- Wheezing in post-cardiac surgery patients is often misattributed to cardiac issues, delaying diagnosis of airway compression.
- Distal airway compression in these children may not be visible on standard chest radiographs.
Findings:
- Magnetic resonance (MR) imaging effectively visualizes extrinsic airway compression.
- The study highlights two pediatric cases of symptomatic extrinsic airway compression caused by pulmonary arterial conduits.
Implications:
- MR imaging should be considered for diagnosing extrinsic airway compression in children post-cardiac surgery.
- Improved diagnostic approaches can lead to timely intervention for airway compromise in this vulnerable population.
Abstract:
Abnormal enlargement or malposition of any vascular structure or mass adjacent to the airway can cause extrinsic airway compression. In children with previous surgery for congenital heart disease, mass effect from prosthetic devices or alteration in the anatomic position of normal structures can lead to extrinsic airway compression. Because many children have complex medical problems after cardiac surgery, wheezing may be attributed to cardiac causes and airway compression may not be investigated. Furthermore, the distal airway compression seen in these children often is not visualized on chest radiographs. MR imaging can be useful in evaluating extrinsic airway compression in these patients. We present the MR imaging of two patients with symptomatic extrinsic airway compression secondary to pulmonary arterial conduits.