Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large near - homogeneous opacity projecting over the left mid and lower lung which appears to be a combination of consolidation and / or loculated effusion ; however , based on a single projection view , it is difficult to differentiate individual contribution . Left upper lung and right lung are clear . Small right pleural effusion is unchanged since ___ . Heart size , mediastinal and hilar contours are normal . Bibasilar pleural calcification is unchanged .
    OUTPUT:
    
A large near - homogeneous opacity in the left mid and lower lung appears to be combination of consolidation and / or effusion ; further evaluation with lateral and left lateral decubitus views may help .