Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The layering right pleural effusion has decreased , but the small left pleural effusion is stable . The lungs are clear . Cardiomegaly is stable . A left pectoral pacemaker remains in place . Bilateral shoulder and multilevel spinal degenerative changes are present . There is stable rightward curvature of the thoracolumbar spine . An IVC filter projects over the medial right upper quadrant .
    OUTPUT:
    
Decreased trace right and stable small left pleural effusions . Stable cardiomegaly . Clear lungs .