Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . There is a mildly enlarged cardiac silhouette , which can be compatible with mild cardiomegaly and / or pericardial effusion . The mediastinal silhouette is within normal limits .
    OUTPUT:
    
Mildly enlarged cardiac silhouette . Findings can be compatible with mild cardiomegaly and / or pericardial effusion . However , even if a pericardial effusion is present , there is no evidence of hemodynamic significance .