Step 5-X-ray chest PA view, lateral view taken to rule out the right pulmonary artery dilatation >16 mm [characteristic of pulmonary arterial hypertension], lateral view to rule out retrosternal space
Candidates exhibiting a flow murmur had invariably an excessively decreased retrosternal space
resulting in a gross cosmetic deformity.
8) In this report, we present a rare case of a duplicated right diaphragmatic crus forming an accessory retrosternal space
and discuss the clinical significance of this anatomical variant.
On the lateral film, the retrosternal space
was opacified by the cardiac silhouette.
On a chest radiograph, features of pulmonary hypertension include enlarged main pulmonary arterial shadows and attenuation of peripheral pulmonary vascular markings; enlarged right ventricle may be recognized as loss of clear retrosternal space
on lateral chest radiograph.