Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tip of the right central venous catheter terminates in the upper right atrium . There is dense left retrocardiac opacity that may represent atelectasis , although infection could be considered in the appropriate clinical setting . Mild interstitial pulmonary edema has slightly progressed from ___ . Small left pleural effusion has slightly increased . No sizable pleural effusion on the right . No pneumothorax . Heart size is stable . No acute osseous abnormalities .
    OUTPUT:
    
1 . Slightly worsening interstitial pulmonary edema since ___ . 2 . Increased small left pleural effusion .