Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes have improved . The cardiac silhouette is still mildly enlarged . The mediastinal hilar contours are normal . Subsegmental atelectasis persists at both lung bases . Blunting of the left costophrenic angle is likely suggestive of a small left pleural effusion . There is no pneumothorax . No new focal consolidation is noted . There is no frank pulmonary edema .
    OUTPUT:
    
Extensive bibasilar subsegmental atelectasis and small left pleural effusion are nonspecific findings . Although attributable to pancreatitis , clinical consideration should be given to acute and / or subacute pulmonary embolism .