Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Rotated positioning . Again seen is a small to moderate size right pleural effusion with underlying collapse and / or consolidation as well as cardiomegaly . Allowing for technical factors , the effusion could be very slightly larger . Possibility of some interval atelectasis at the right base medially can not be excluded . There is upper zone redistribution and mild vascular plethora , similar to prior . Probable atelectasis at the left lung base . No left - sided effusion . No free air seen beneath the diaphragm . On the right , the level of the diaphragm is somewhat uncertain .
    OUTPUT:
    
Small to moderate effusion with underlying collapse and / or consolidation , overall similar to prior , possibly slightly larger . Interval atelectasis at the right base medially can not be excluded . No free air seen beneath the diaphragm , though the exact position of the right hemidiaphragm is not well - defined .