Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top - normal . Mild prominence of the pulmonary arteries is unchanged compared to the prior exam . No focal consolidations concerning for pneumonia are identified . There is mild bibasilar atelectasis . There may be a small right pleural effusion . There is no evidence of a pneumothorax .
    OUTPUT:
    
No acute intrathoracic abnormalities identified . Small right pleural effusion .