Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes accentuate the cardiac silhouette and bronchovascular structures . Patchy and linear opacity at the right lung base with associated mild volume loss favors atelectasis . No definite pleural effusion .
    OUTPUT:
    
Patchy and linear right basilar opacity probably represents atelectasis and less likely a focus of aspiration or early pneumonia . Followup radiograph may be helpful in this regard .