Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , the ET tube and NG tube have been removed . Left IJ central line is unchanged , with tip over mid SVC . No pneumothorax is detected . Probable background COPD . Cardiomediastinal silhouette is grossly unchanged , with mild cardiomegaly . Mild vascular plethora is probably slightly improved . Hazy opacities at the right and left lung bases are themselves improved , but the right hemidiaphragm is less distinct , question due to differences in positioning . Faint hazy opacities at right - greater - than - left lung apices again noted . Small bilateral effusions would be difficult to exclude .
    OUTPUT:
    
Multifocal hazy opacities . These appear slightly more pronounced at the lung apices ( right - greater - than - left ) , slightly improved at the left lung base , and probably slightly worse at the right lung base . The differential could include changes related to CHF , but multifocal pneumonic infiltrates areas of aspiration pneumonitis are also in the differential . Possibility of small effusions , particularly on the right , can not be excluded . The degree of vascular plethora actually appears slightly improved .