Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . Calcifications are seen in the aortic arch . Hyperexpansion of lungs are redemonstrated , with persistent blunting of the left costophrenic angle and mild left hemidiaphragmatic elevation , which appear chronic . There is no pneumothorax or vascular congestion . A small left effusion is present . Note is made of a vague density over the left posterior 4th rib , raising question of bony irregularity , which could be further assessed by oblique view and clinical correlation with focal tenderness .
    OUTPUT:
    
1 . Small left pleural effusion . No pneumothorax , consolidation , or edema . 2 . Vague density overlying left posterior 4th rib raises qestion of bony irregularity . Recommend oblique view for further assessment and clinical correlation with focal tenderness . Findings reported to Dr . ___ at 7 a .m . on ___ via phone .