Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low leading to crowding of the bronchovascular structures . Allowing for differences in technique and inspiration , mild cardiomegaly is grossly stable . Moderate central vascular congestion and interstitial pulmonary edema is noted . Left retrocardiac atelectasis is noted , and there is a probable left pleural effusion . The cardiomediastinal silhouette is grossly unchanged from the prior examination .
    OUTPUT:
    
1 . Mild cardiomegaly and moderate central pulmonary vascular congestion and interstitial edema . 2 . Left lower lobe atelectasis and likely pleural effusion , with superimposed infection remaining difficult to exclude .