Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy and coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear unchanged including mild cardiomegaly as well as tortuosity and calcification of the thoracic aorta . A mild new interstitial abnormality suggests mild pulmonary vascular congestion . Persistent patchy retrocardiac opacities suggest minor scarring or atelectasis . Trace pleural effusions are difficult to exclude but there is no sizable pleural effusion . There is no pneumothorax . No fracture is identified . A round calcifications projecting along the coracoid process of the left scapula appears unchanged . The bones appear demineralized .
    OUTPUT:
    
Findings suggest mild pulmonary vascular congestion .