Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is subtle increase in opacity over the medial right lower lung on the frontal view , which may be due to atelectasis overlapping vascular structures , but early infection is not excluded in the appropriate clinical setting . No focal consolidation is seen on the left . The cardiac silhouette is top - normal to mildly enlarged . Mediastinal contours unremarkable . No pulmonary edema is seen .
    OUTPUT:
    
Subtle increase in opacity of the medial right lower lung on the frontal view could be due to atelectasis and overlapping vascular structures , but early consolidation is not excluded in the appropriate clinical setting .