Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is poorly assessed , but there appears to be interval slight enlargement of the left cardiac silhouette since the most recent prior study . There has also been slight increase in the right pleural effusion with decrease in the right aerated lung . Persistent right medial opacities may represent atelectasis , but pneumonia or tumor progression can not be excluded . The left lung remains clear . Again seen is a right Port - A - Cath with tip terminating in the low SVC .
    OUTPUT:
    
Slight enlargement of the left cardiac silhouette with slight increase in right pleural effusion .