Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs were obtained . The lungs are hyperinflated and the diaphragms are flattened . A vague opacity in the mid left lung without definite correlate on the lateral projection and is likely due to soft tissue summation of shadows . There may be mild right basilar atelectasis . There is no effusion or pneumothorax . The top normal heart is unchanged . The central pulmonary vasculature is indistinct .
    OUTPUT:
    
No acute cardiopulmonary process .