Therapeutic embolization of systemic arterial supply to normal basal segments of the left lower lobe of the lung.

Systemic arterialization of normal lung without sequestration is a rare congenital abnormality. The basal segments of the left lower lobe are most frequently involved. The involved lung has no structural abnormalities of the tracheobronchial tree that distinguish this abnormality from bronchopulmonary sequestration. Haemoptysis and exertional dyspnoea are common presenting symptoms. We report the case of a 26-year-old man who presented with recurrent haemoptysis due to systemic arterialization of basal segments of the left lower lobe of the lung, without sequestration. Therapeutic embolization using metallic coils was successfully performed without any complications. There was no further haemoptysis during a 6-month follow up. Therapeutic embolization is a safe and effective method of managing the haemoptysis associated with aberrant systemic arterial supply to the normal lung.