Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of consolidation , effusion , or pulmonary vascular congestion . Cardiac silhouette is slightly enlarged , new since remote prior . Degenerative changes are noted at the acromioclavicular joints bilaterally .
    OUTPUT:
    
Mild cardiomegaly without superimposed acute cardiopulmonary process .