Anomalous Origin of the Left Pulmonary Artery From the Right Pulmonary Artery

Tracheoesophageal compression due to congenital vascular anomalies (vascular rings)

“…In constrast to the radiological literature, these authors found a lower association of a right arch with either truncus arteriosus (15%), tricuspid atresia (2.9%), or double-outlet right ventricle (15%). 37 An aberrant right subclavian artery-usually found as an isolated defect-has been reported in association with congenital heart defects in 4/9 (44%) subjects by Rivilla et al 17 An aberrant left pulmonary artery (pulmonary artery sling) is associated with CHD in more than 50% of patients, [38][39][40] and a persistent left superior vena cava, atrial septal defect, ventricular septal defect, and patent ductus arteriosus have been frequently reported. Recently, Backer et al, 14 Horvath et al, 19 and Pawade et al 41 found CHD in 1/9 (11%), 1/5 (20%), and 2/18 (22%) subjects respectively with pulmonary artery slings.…”

Partial Anomalous Left Pulmonary Artery

“…12 Congenital anomalies involving the cardiovascular and respiratory as well as other organ systems are frequently associated with anomalous origin of the LPA. Clarkson et al 13 and Jue et al 11 have demonstrated that 58% to 83% of patients had additional congenital anomalies and that 37% to 48% of patients had additional cardiovascular anomalies. The most commonly encountered cardiac lesions were patent ductus arteriosus and atrial septal defects.…”

“…The embryology of the anomalous LPA from the RPA is uncertain, but it has been described as a collateral artery derived from the pulmonary branch of the right sixth aortic arch. 11 An anomalous LPA from the RPA has most frequently been reported in the setting of a pulmonary sling, a result of the typical posterior course that the anomalous LPA takes relative to the trachea. Although Jue et al theorized that a LPA might arise from the RPA and pass anterior to the tracheobronchial tree, 11 such a case was not reported until 1991.…”

Alça da artéria pulmonar: relato de dois casos e revisão da literatura

“…Esta hipótese baseia-se no fato de que o ducto arterioso, que se origina da porção dorsal do sexto arco aórtico esquerdo, se desenvolve normalmente na maioria dos casos (5) . Outra corrente considera que a artéria pulmonar esquerda anômala seja um ramo da artéria pulmonar direita, que estabelece sua trajetória para o pulmão esquerdo em decorrência da falta de suprimento arterial (8,9) . Clinicamente, a maioria dos pacientes apresenta distrição respiratória progressiva, mas a gravidade do quadro depende da extensão da estenose traqueobrônquica.…”