Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate normal heart size . The cardiomediastinal silhouette and hilar contours are normal . There is a vague opacity projecting over the ___ anterior rib on the frontal view which may represent overlapping shadows ; however , further evaluation with oblique views is recommended . No pleural effusion or pneumothorax . No displaced rib fracture identified .
    OUTPUT:
    
No pneumonia . Possible vague opacity projecting over the ___ anterior rib may represent overlapping shadows ; however , further evaluation with oblique views is recommended .