Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . Left basilar opacities again seen , which could be due to combination of pleural effusion and atelectasis but consolidation may be present . The right lung is clear . The cardiac silhouette remains mild to moderately enlarged . Mediastinal contours are stable . Degenerative changes of the right shoulder and deformity of the left glenohumeral joint again seen , partially imaged .
    OUTPUT:
    
Patient is status post median sternotomy . Left basilar opacities again seen , which could be due to combination of pleural effusion and atelectasis but consolidation may be present . The right lung is clear . The cardiac silhouette remains mild to moderately enlarged . Mediastinal contours are stable . Degenerative changes of the right shoulder and deformity of the left glenohumeral joint again seen , partially imaged .