Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right Port - A - Cath ends in the approximate region of the cavoatrial junction , unchanged . Focal opacity in the right lateral lung base is slightly less conspicuous on today 's exam compared to ___ . A small right pleural effusion is persistent . Ill - defined opacities in the periphery of the left lung suggests chronic multifocal aspiration , similar to the prior exam . No pneumothorax . The heart is normal in size . Distended neoesophagus is overall unchanged .
    OUTPUT:
    
Slight improvement in peripheral right basilar opacity and persistent poorly defined peripheral left lung opacities , most likely due to multifocal aspiration / aspiration pneumonia .