Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is prominence of the superior mediastinal contours , which appears relatively lucent recent and may represent prominent vessels or mediastinal fat . There is mild elevation of the left hemidiaphragm . The lungs are relatively well aerated , except to note mild left basilar atelectasis . There is no focal consolidation concerning for pneumonia , pleural effusion or pneumothorax . Mild pulmonary vascular congestion is noted without overt pulmonary edema . The cardiac silhouette is mildly enlarged . The thoracic aorta is moderately tortuous . The patient is status post left shoulder replacement .
    OUTPUT:
    
Mild cardiomegaly with mild pulmonary vascular congestion .