Anomalous systemic arterial supply to normal basal segments of the left lung without sequestration

Computed tomography (CT) angiographic image of a 25-year old male patient admitted with haemoptysis displays the large systemic artery originating from the descending aorta and supplying the left lower lobe. No left lower basal segment pulmonary artery was observed (Fig. 1). Division of the abnormal artery with left lower lobectomy was performed (Fig. 2). The patient was discharged without any complication.