Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright portable view of the chest demonstrates hyperexpanded lungs . There is no pleural effusion or pneumothorax . Heart is mildly enlarged . There is a small retrocardiac consolidation . Right lung base opacities are also seen . Hilar and mediastinal silhouettes are unremarkable . Pacemaker leads project over right atrium and right ventricle .
    OUTPUT:
    
Mild cardiomegaly and pulmonary edema . Small retrocardiac consolidation and right lung base opacities , likely atelectasis or infection .