Pediatric Radiology

, Volume 42, Issue 2, pp 215–219 | Cite as

The triad of bridging bronchus malformation associated with left pulmonary artery sling and narrowing of the airway: the legacy of Wells and Landing

  • Walter E. Berdon
  • Oliver J. Muensterer
  • Yu-Min M. Zong
  • Carl L. Backer
Historical Perspective


Although noted in the 19th century, it was not until 1938 that Scheid published the combination of left pulmonary artery sling and narrowing of the airway due to annular tracheal cartilages. Unaware of these prior descriptions, and without a precise preoperative diagnosis, Willis Potts in Chicago performed the first successful sling repair in 1953. In 1976, Cohen and Landing described Scheid’s combination of left pulmonary artery sling and stenosis caused by complete tracheal rings, and the term “ring-sling complex” was introduced by Berdon in 1984. Four years later, Wells and Landing noted characteristic tracheobronchial malformations associated with these lesions and proposed a classification that has been confirmed to be clinically relevant in recent cross-sectional imaging studies.


Bridging bronchus Pulmonary artery sling Tracheal narrowing Wells Landing 



The authors are grateful to Dr. Patricia Clarkson, Dr. Richard Jaffe, Dr. Beverley Newman, Dr. J. Bruce Beckwith and Dr. Marvin Nelson Jr. for sharing their insights and memories.


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Walter E. Berdon
    • 1
  • Oliver J. Muensterer
    • 2
  • Yu-Min M. Zong
    • 3
  • Carl L. Backer
    • 4
  1. 1.Department of Radiology, Morgan Stanley Children’s Hospital of New York PresbyterianColumbia University Medical CenterNew YorkUSA
  2. 2.Division of Pediatric Surgery, Department of Surgery, Komansky Center for Children’s HealthWeill Cornell Medical College at New York Presbyterian HospitalNew YorkUSA
  3. 3.Department of Radiology, Shanghai Children’s Medical CenterShanghai Jiao Tong University School of MedicineShanghaiChina
  4. 4.Division of Cardiovascular-Thoracic SurgeryChildren’s Memorial HospitalChicagoUSA

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