Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , there is mild improvement of the nodular component of pre-existing bilateral parenchymal opacities . Heart size is mildly enlarged . Mediastinal silhouette is within normal limits . Left pectoral Port - A - Cath terminates in the upper to mid SVC . There is persistent small pleural effusion on the right .
    OUTPUT:
    
Mild improvement of the pulmonary edema compared to ___ .