Prenatal Ultrasound Diagnosis of Unilateral Agenesis of Pulmonary: Artery Case Reports and Review of the Literature

This study discusses the value and characteristics of prenatal ultrasound diagnosis of unilateral agenesis of pulmonary artery (UAPA). Two cases of prenatal ultrasound diagnosis of UAPA have been reported in our centre, involving either a distal right or left pulmonary artery receiving retrograde perfusion from the corresponding ductus arteriosus. Amniocentesis chromosome testing had no significant value in the prenatal diagnosis of UAPA. Postnatal computed tomography angiography confirmed the diagnoses. Both infants underwent surgical reconstruction. One case required a balloon dilation for postoperative stenosis, while both showed good outcomes during follow-up. Our study provides valuable clinical experience and guidance for prenatal ultrasound diagnosis of UAPA to improve the prognosis of children with UAPA.