Right-Left Differential Cyanosis in a Newborn With a Circumflex Retroesophageal Left Aortic Arch

Key Points

• To explore the occurrence of differential cyanosis in a newborn with specific vascular anatomy.
• Detailed clinical examination of the newborn
• Monitoring cyanosis levels between right and left sides of the upper body
• Imaging to confirm vascular structure anomalies
• Documented differential cyanosis between the right and left sides of the upper body
• Identified circumflex retroesophageal left aortic arch as a contributing factor
• Noted implications for potential treatment and intervention strategies