Fig. 5

CT axial images seen are comparisons of pericardial agenesis (right) with normal CT chest (left). A In the absence of the pericardium, lung tissue can be detected between the aorta and the main segment of the pulmonary artery. B Normally, the aortopulmonary window is covered by pericardium and contains some fat. C Lung window—CT coronal image reveals an area of lung parenchyma between left hemidiaphragm and the base of the heart