Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Hazy right basilar opacity may be due to a combination of atelectasis , edema , and consolidation . There is mild pulmonary vascular congestion . There is no pneumothorax . Cardiomegaly is similar to prior . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen . Sternal wires are intact . Aortic arch calcifications and surgical clips projecting over the left chest appear similar to prior .
    OUTPUT:
    
Hazy right basilar opacity may be due to a combination of atelectasis , edema , and infection .