Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The position of the right - sided PICC line is unchanged . Heart appears enlarged . Trachea is midline . There is some widening of mediastinum , mainly on the right side of the carina suggestive of a loculated pleural effusion . This does not appear to be significantly changed from the prior study . A small left pleural effusion is stable . There is some improvement of the right - sided atelectatic changes . No pneumothorax .
    OUTPUT:
    
Marginal improvement of the right lung atelectatic changes compared to the previous study , otherwise unchanged .