Anomalous origin of the left lower lobe artery from the right pulmonary artery

The child was admitted to our hospitalAdmitted with a diagnosis of subaortic ventricular septal defect (VSD) and highsevere pulmonary hypertension. The general condition was satisfactory, without signs of infection. Ater the EchoAfter echocardiography, doctors suspected a pulmonary sling, was suspected; therefore, computed tomography was prescribedordered.

Aberrant left pulmonary artery or Pulmonary Artery Sling is characterised by anomalous origin of the left PA from the right PA and passes between trachea and oesophagus. It causes compression of the the trachea and right mainstem bronchus, causes upper airway symptoms. This These patients require a full work-up, including imaging and surgery planning.

In our case, only the lower lobe branch of the left PA has an anomalous origin. It originates below the level of the right lower lobe bronchus, is located between the left main bronchus and the oesophagus, without compressing them. 

The patient underwent surgery to repair the VSD. It was decided to monitor the condition of the pulmonary arteries in future.