Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal lateral radiographs of the chest demonstrates very low lung volumes . The cardiac sillouette is midly enlarged , which could be due to cardiomegaly or a pericardial effusion depending on the clinical setting . Normal mediastinal and hilar contours . Clear lungs . No pleural effusion or pneumothorax . No displaced rib fracture .
    OUTPUT:
    
Very low lung volumes , but no evidence of pneumonia Mildly enlarged cardiac sillouette could be due to cardiomegaly or a pericardial effusion depending on the clinical setting . Page sent to Dr ___ by Dr ___ ___ : 15 on ___ regarding change in final read from preliminary read .