Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is a right - sided internal jugular line seen terminating in the upper to mid SVC , unchanged in position and without evidence of pneumothorax . There is stable , moderate cardiomegaly with associated vascular congestion and unchanged mild to moderate pulmonary interstitial edema . There is a small left pleural effusion noted . A left - sided , retrocardiac opacification is once again identified , and may represent an effusion with adjacent atelectasis , although a superimposed infectious process can not be excluded . Mediastinal contours are stable .
    OUTPUT:
    
1 . Unchanged moderate cardiomegaly with associated pulmonary interstitial edema . 2 . Unchanged appearance of a left sided retrocardiac opacification which silhouettes the left hemidiaphragm . This likely represents an effusion within adjacent atelectasis , although a superimposed infectious process can not be entirely excluded .