Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and well - aerated lungs . Subtly increased right infrahilar opacity , with a possible correlate overlying the cardiac silhouette on lateral view , could represent an early pneumonia or simply be a confluence of shadows . There is no pleural effusion or pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Equivocal opacity in the right middle lobe . If symptoms persist , followup to resolution is recommended .