Presentation of two cases of intralobar pulmonary sequestration in association with systemic arterial supply to the normal contralateral lung

Intralobar pulmonary sequestration and anomalous systemic arterial supply to the normal lung are two anomalies pertaining to the pulmonary sequestration spectrum. This term brings together a group of related congenital anomalies with a common embryogenesis. Most cases of pulmonary sequestration are unilateral. Bilateral presentation is very rare, with few cases reported. We present two patients with intralobar pulmonary sequestration in the left lung and systemic arterial supply to the otherwise normal right lung. This association is extremely unusual and, to the best of our knowledge, this is the first time it has been diagnosed with multidetector computerized tomography.