Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrated a persistent small right pleural effusion . There is no left pleural effusion . Mild interstitial pulmonary edema has progressed since prior exam . Heart is mildly enlarged . Ascending aorta is mildly tortuous . Sternotomy wires are intact . Multiple surgical clips project over cardiac silhouette . No pneumothorax . A round density projecting over right lower lung likely represents a bone island of the scapula .
    OUTPUT:
    
Mild interstitial pneumonia and cardiomegaly has progressed since ___ exam . Small right pleural effusion persists .