Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is small bilateral pleural effusion and bilateral lung base consolidation , which could be due to pneumonia and / or atelectasis . Increased interstitial markings are consistent with mild pulmonary edema . Cardiomediastinal silhouette is normal size . No free air is identified in the abdomen .
    OUTPUT:
    
Basal pneumonia and atelectasis . This was better evaluated on the CTA of abdomen and pelvis from the same day . On the CTA , the consolidation is bronchocentric with irregular borders , which is more characteristic of pneumonia than atelectasis .