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Year : 2017  |  Volume : 3  |  Issue : 1  |  Page : 53-56

Right lung agenesis with left pulmonary artery sling: Computed tomography imaging

1 Department of Cardiac Radiology, C N Centre, All India Institute of Medical Sciences, New Delhi, India
2 Department of Radiology, RML-PGIMER, New Delhi, India
3 Department of Radiology, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
Sanjeev Kumar
Department of Cardiac Radiology, Room No. 2, C N Centre, All India Institute of Medical Sciences, New Delhi
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jpcs.jpcs_46_16

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We report a case of an infant with respiratory distress and difficult intubation, who on multidetector computed tomography (MDCT) imaging was found to have an extremely rare combination of left pulmonary artery (LPA) sling and right lung agenesis (RLA). The complete right-sided mediastinal shift resulted in dextroposed, coronally placed, anteriorly crossing aortic arch causing posterior displacement and significant anterior compression of the trachea. The posterior tracheal displacement and stenosis made the intubation quite difficult and challenging in this patient. Cross-sectional imaging with computed tomography angiography has an edge over echocardiography and conventional pulmonary angiography in demonstrating the anomalous posterior course of an LPA in the presence of coexisting RLA. MDCT imaging plays a pivotal role in evaluating the structural anatomy and thus provides with pertinent information regarding the cause and the level of airway obstruction.

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