Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right internal jugular central venous catheter and right PICC both terminate in the mid to low SVC . Lung volumes are lower since the next most recent study . Small left pleural effusion and adjacent atelectasis is unchanged . Mild cardiomegaly is unchanged . There is no pneumothorax .
    OUTPUT:
    
1 . Lower lung volumes since the prior study . 2 . Persistent small left pleural effusion and atelectasis .