Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC line ends at low SVC . Moderate right pleural effusion with adjacent lung atelectasis has decreased since ___ . Minimal left pleural effusion is unchanged . There are no new lung opacities of concern for pneumonia . Heart size , mediastinal and hilar contours are stable .
    OUTPUT:
    
Moderate right pleural effusion with adjacent lung atelectasis has improved since ___ .