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Anomalous left pulmonary artery without pulmonary artery sling
  1. A Robidaa,
  2. B Venkatramanb
  1. aDepartment of Cardiology and Cardiovascular Surgery, Division of Paediatric Cardiology, Hamad General Hospital, PO Box 3050, Doha Qatar, bDepartment of Radiology, Hamad General Hospital
  1. Dr Robida.

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An anomalous left pulmonary artery almost always runs posterior to the trachea causing a pulmonary artery sling compressing the trachea and oesophagus. We describe a unique case of an anomalous left pulmonary artery passing anterior to the trachea without producing the pulmonary artery sling associated with a right aortic arch and an aberrant left subclavian artery.

Case report

A 5 year old asymptomatic girl presented with a heart murmur. Echocardiography established a clinical diagnosis of a large secundum atrial septal defect. A right aortic arch was also noted. The origin of the left pulmonary artery was not seen from the pulmonary trunk and was subsequently seen to arise from the right pulmonary artery anterior to the trachea (fig 1). Oesophagography showed an impression on the right upper lateral margin by the right aortic arch with an additional posterior oblique indentation, consistent with an aberrant left subclavian …

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