Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small - to - moderate right pleural effusion is stable . Mild - to - moderate pulmonary edema with basal component is overall stable since the prior study , with possible very minimal improvement at the left lung base . Cardiomediastinal silhouette and hilar contours are stable . Small left pleural effusion persists . Right PICC is stable , only being able to be traced to the junction of the brachiocephalic veins .
    OUTPUT:
    
Overall stable with possible minimal improvement at the left lung base .