Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there has been decrease in size of a right pleural effusion after thoracentesis , with likely a loculated component . There is no pneumothorax . Right lower heart border is obscured by fluid . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Interval decrease in size of right pleural effusion after thoracentesis without pneumothorax .