Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly again noted . Compared to ___ , there is a new small left pleural effusion , with underlying atelectasis . The previously seen small right effusion may be slightly larger . Small lucent locule at the right cardiophrenic angle is of uncertain etiology , but is unlikely to represent a pneumothorax unless there has been recent intervention . Previously seen vascular plethora has resolved . No CHF .
    OUTPUT:
    
Interval resolution of vascular plethora . No evidence of CHF . Cardiomediastinal silhouette is slightly enlarged but unchanged . New small left effusion with underlying atelectasis . No definite infectious infiltrate . Small right pleural effusion is slightly larger . New lucent locule in the right cardiophrenic region , of uncertain etiology or significance --___ to this area on followup films is requested . A loculated pneumothorax or bleb might account for this appearance , but unless there has been recent intervention , pneumothorax is considered unlikely . Alternatively , this could represent artifact due to localized scarring .