Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The heart appears borderline enlarged . There is volume loss in the left lung with smooth thickening of the left apical pleura suggesting scarring and potentially post - surgical change . There is no definite pleural effusion or pneumothorax . The pulmonary interstitium is mildly prominent , suggesting mild vascular congestion , including perihilar fullness . The frontal view also suggests a medial retrocardiac opacity . The bones appear markedly demineralized . A lower thoracic vertebral body shows a vertebra plana deformity which is of uncertain chronicity , although not necessarily acute . In addition , a second vertebral body , probably relating to the upper lumbar spine , shows a poorly visualized suspected compression deformity .
    OUTPUT:
    
1 . Smooth but marked left apical pleural thickening , suspected to be chronic and possibly due to prior inflammation or possibly post-surgical . Direct comparison to prior studies may be helpful to assess for change if any are available . 2 . Patchy suspected retrocardiac opacity . Possibilities include atelectasis or scarring . Pneumonia is not excluded . Follow - up radiographs may be helpful to re-assess in addition to correlation with pulmonary symptoms , if any . 3 . Findings suggesting mild fluid overload . 4 . Severe lower thoracic compression deformity and probably a second compression deformity along the upper lumbar spine .