Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large loculated left - sided pleural effusion with concurrent left lower lobe consolidation obscuring the left lower hemithorax and the left heart border , hindering assessment of heart size . A hazy opacity in the left upper lung field does not appear significantly changed when compared with prior radiograph from outside institution allowing for technical differences and may reflect layering fluid . The right lung shows some streaky opacity at the base , likely patchy atelectasis . There is no right - sided pleural effusion . There is no pneumothorax .
    OUTPUT:
    
1 . Large loculated left - sided pleural effusion with concurrent left lower lobe consolidation , likely a combination of atelectasis and / or infection . 2 . Mild basilar atelectasis on the right .