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Low-Tube-Current Multidetector CT for Children with Suspected Extrinsic Airway Compression

Preeyacha Pacharn1,2, Stacy A. Poe3 and Lane F. Donnelly1,3

1 Department of Radiology, Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH 45229-3039.
2 Present address: Department of Radiology, Siriraj Hospital and Mahidol University, Bangkok, Thailand 10700.
3 Department of Pediatrics, Children's Hospital Medical Center, Cincinnati, OH 45229-3039.



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  		Fig. 1A. —Additional information provided by reformatted CT images in 5-month-old girl with herniated liver causing cardiac displacement and resultant left main bronchus compression between heart and descending aorta. Axial CT scan acquired at lung window level shows normal caliber of right main bronchus (arrowhead) and severe narrowing of left main bronchus (arrow).

 


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  		Fig. 1B. —Additional information provided by reformatted CT images in 5-month-old girl with herniated liver causing cardiac displacement and resultant left main bronchus compression between heart and descending aorta. Axial CT scan acquired at mediastinal window level shows anterior hernia of liver (L) with posterior displacement of cardiac structures.

 


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  		Fig. 1C. —Additional information provided by reformatted CT images in 5-month-old girl with herniated liver causing cardiac displacement and resultant left main bronchus compression between heart and descending aorta. Sagittal reconstruction CT image shows herniated liver (L), posterior displaced heart, and compression of left main bronchus (arrow) between displaced heart and descending aorta. Symptoms of airway compression resolved after surgical hernia repair.

 


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  		Fig. 2. —2-year-old boy with complete tracheal rings. CT shows small caliber and round appearance of trachea (arrows).

 


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  		Fig. 3A. —2-month-old boy with double aortic arch. CT scans acquired at mediastinal (A) and lung (B) window levels show double aortic arch with left (L) and right (R) arches with extrinsic tracheal compression (arrow, A and B).

 


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  		Fig. 3B. —2-month-old boy with double aortic arch. CT scans acquired at mediastinal (A) and lung (B) window levels show double aortic arch with left (L) and right (R) arches with extrinsic tracheal compression (arrow, A and B).

 


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  		Fig. 4. —2-year-old boy with plexiform neurofibroma and previously undiagnosed neurofibromatosis type 1 who presented with stridor from airway compression. CT scan shows infiltrative superior mediastinal mass (M) compressing trachea (arrows).

 

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