Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence for lobar consolidation , pleural effusion , pneumothorax , or pulmonary edema . Linear atelectasis is noted at the left lung base . Mild blunting of the right costophrenic angle is likely also secondary to atelectasis . The cardiomediastinal silhouette is unchanged in appearance .
    OUTPUT:
    
No evidence for acute cardiopulmonary process .