Abstract
Anomalous systemic arterial supply to the left basal lung is a rare congenital abnormality and is even rarer when associated with arterial dissection of the feeding artery. Herein, we report a young patient who was hospitalized with sudden chest pain, which proved to be an abnormal thoracic aorta supplying blood to the basal segment of the left inferior lobe of the lung, with the supply artery dissection. It hasn't been reported as far as we know. The patient was successfully surgically resected and recovered well at follow-up.