PMC6087648_01
Selected images of contrast enhanced computed tomography (CECT) scan of the chest with Twin A demonstrating a completely absent left lung, left main pulmonary artery and left main bronchus. Large right main pulmonary artery (*), right bronchial branches (tiny white arrows), organized sequestrated lung tissue (black arrow), with arterial blood supply from ascending aorta (long white arrows). Twin B CECT scan of the chest demonstrates hypoplasia of left lung (black dotted arrows), tracheal bifurcation (black arrows), large right main pulmonary artery (*). Absent left main pulmonary artery.
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The chest computed tomography (CT) scan with contrast (Figure 1) confirmed the diagnoses of left-sided pulmonary agenesis (twin A) and left-sided hypoplasia (twin B).