Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . No focal consolidation , pleural effusion , or pneumothorax is detected . There may be mild central pulmonary vascular engorgement , which may be exaggerated by low lung volumes . Evaluation of heart size is suboptimal in the setting of low lung volumes . Mediastinal contours are within normal limits . Post - surgical changes are again noted . Osteopenia is seen .
    OUTPUT:
    
No radiographic evidence for pneumonia .