Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . Basilar atelectasis is seen without definite focal consolidation . There is no pleural effusion . No pneumothorax is seen . Cardiac silhouette is mildly enlarged . Mediastinal contours are unremarkable .
    OUTPUT:
    
Mild cardiomegaly without overt pulmonary edema .