Right pulmonary agenesis with ventricular septal defect and partial anomalous left pulmonary artery sling: a case report.

Partial anomalous left pulmonary artery sling is an exceptionally rare congenital anomaly, and its coexistence with ventricular septal defect and right lung agenesis has not been reported. We describe a neonate presenting with right lung agenesis, a large ventricular septal defect, partial anomalous left pulmonary artery sling, and congenital tracheal stenosis. Following surgical repair of the ventricular septal defect at 73 days of age, the patient showed marked improvement in respiratory status and was discharged home without respiratory support.