Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Inspiratory volumes are low . Heart size is borderline or slightly enlarged . The pulmonary hila are both slightly prominent , similar to prior . There is a small left effusion with underlying collapse and / or consolidation . Mild vascular plethora may relate to low inspiratory volumes . Doubt overt CHF . Some patchy right infrahilar opacity most likely represents atelectasis . However , an early infiltrate or area of aspiration could have a similar appearance . There is possible minimal blunting of the right costophrenic angle with atelectasis at the right lung base . No frank consolidation or gross effusion in the right lung
    OUTPUT:
    
Small effusion with underlying collapse and / or consolidation at the left base . Appearances similar to ___ but the effusion may be very slightly smaller and there is slight improvement in the degree of retrocardiac aeration . Minimal atelectasis and possible minimal costophrenic angle blunting at the right base is new . Patchy right infrahilar opacity is slightly more pronounced than on ___ . While this likely represents atelectasis , the differential diagnosis could include an early infiltrate or area of aspiration .