Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post tracheostomy . The cardiac , mediastinal and hilar contours appear stable including cardiomegaly . Although less striking than before there are central congestive changes , and in addition , focal opacity in the right lower lung best seen on the anterior view . Pleural effusions have resolved .
    OUTPUT:
    
Focal opacity in the right lower lung , probably in the right lower lobe ; differential considerations include pneumonia versus atelectasis . Correlation with clinical presentation is suggested . Findings also suggesting mild vascular congestion .