Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Mild to moderate enlargement of the cardiac silhouette appears relatively unchanged from the previous exam . The aorta remains tortuous and calcified at the aortic knob . Mild pulmonary vascular congestion is worse in the interval . No pleural effusion or focal consolidation is present . There is no pneumothorax . The lungs remain hyperinflated . No acutely displaced fractures are evident . Osseous structures are diffusely demineralized .
    OUTPUT:
    
Mild to moderate cardiomegaly with mild pulmonary vascular congestion . No displaced fractures are evident . If there is continued concern for rib fracture , consider a dedicated rib series .