Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate left pleural effusion with adjacent atelectasis has increased since the prior study . A small right pleural effusion is grossly stable . There is no pneumonia , pulmonary edema or pneumothorax . Heart size is slightly enlarged but stable . Prominence of the ascending aortic countour is stable . The pulmonary arteries are large , particularly the left , unchanged since ___ . Both were mildly enlarged on ___ , the only other prior chest image . I would suggest clinical assessment and evaluation of the left diaphragmatic region for a source of left dominant pleural effusion .
    OUTPUT:
    
Increasing left pleural effusion , now moderate in size . Stable , very small , right pleural effusion . Exacerabation of probably long standing pulmonary artery dilatation , left greater than right .