Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and fairly well - aerated lungs , without pleural effusion or pneumothorax . Mildly increased opacity adjacent to but not obscuring the right heart border has a linear quality on lateral view suggestive of atelectasis . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .