A Rare Congenital Bronchial Abnormality – Accessory Cardiac Bronchus

Accessory cardiac bronchus (ACB) is a rare and not well-recognized congenital bronchial abnormality, with an incidence ranging from 0.07% to 0.5%. It was first reported by Brock in the year 1946. It usually ends blindly but may also supply ventilated parenchyma. ACB is usually asymptomatic, but patients may experience symptoms such as recurrent pneumonia, hemoptysis, cough, or dyspnea. We incidentally identified an ACB anomaly during flexible bronchoscopy examination in our case. Since being a rare bronchial abnormality, we are reporting a case of ACB. ACB, though a rare anomaly, could still be contributing to lower respiratory tract symptoms. Pulmonologists who routinely perform bronchoscopy should be aware of this congenital anomaly.