Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Cardiomegaly is moderate . Overall contour of the mediastinum is unchanged with prominence of the aortic knob previously assessed by CT . There is no focal consolidation , large effusion or pneumothorax . There are right and left perihilar linear densities which likely represents minimal atelectasis or scarring . There is an azygous fissure . No acute fracture is seen . No free air below the right hemidiaphragm .
    OUTPUT:
    
Cardiomegaly . No evidence of acute injury to the chest .