Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single semi-erect AP portable view of the chest was obtained . The patient is rotated somewhat to the right . Tracheostomy tube is again seen . There is right mid to lower lung opacity which appears decreased since the prior study but persists , which could be due to underlying infection and / or aspiration . There is also blunting of the right costophrenic angle , which may be due to a pleural effusion . There is a nodular opacity projecting over the left lower hemithorax , which likely represents nipple shadow . The aorta remains tortuous . The cardiac silhouette is not enlarged . There is mild left base atelectasis .
    OUTPUT:
    
Right base opacity and blunting of the right costophrenic angle may be due to combination of consolidation and pleural effusion . Consolidation may be due to infection and / or aspiration .