A unique congenital mediastinal malformation.

We report a case of a 35-year-old patient presenting with a unique asymptomatic malformation associating extralobar pulmonary sequestration communicating with a bronchogenic cyst of the esophageal wall via the aortopulmonary window, dextroisomerism, and complete agenesia of the left pericardium. Despite computed tomography (CT) scan and magnetic resonance imaging (MRI), the diagnosis could not be established before left thoracotomy. The sequestrated lobe and bronchogenic cyst were then successfully resected.