Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs demonstrate low lung volumes . There is subsequent atelectasis at the bases . There is no pneumothorax or pleural effusion . No evidence of pulmonary edema . Heart size is probably within normal limits , its size exaggerated by AP technique and low lung volumes . Suboptimal evaluation for rib fracture , if clinical concern , CT is more sensitive . Mild anterior wedging of at least 2 lower thoracic vertebral bodies is of indeterminate age , but could be degenerative .
    OUTPUT:
    
Low lung volumes with atelectasis . No definite focal consolidation . Mild anterior wedging of at least 2 lower thoracic vertebral bodies is of indeterminate age , but could be degenerative . Correlate clinically for acute injury and need for additional imaging .