Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates a normal cardiomediastinal silhouette . Increasing opacity of the left lower lung is likely a combination of increased pleural effusion and atelectasis , but superimposed pneumonia can not be excluded . A right pleural effusion is better seen on CT from ___ . The remainder of the exam is unchanged .
    OUTPUT:
    
Increasing opacity of the left lower lung is likely a combination of increased pleural effusion and atelectasis , but superimposed pneumonia can not be excluded . These findings were communicated via telephone by Dr . ___ to Dr . ___ at ___ on ___ .