Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate right pleural effusion and overlying atelectasis is unchanged . A tiny right apical pneumothorax is present . A moderate hiatal hernia is similar . Retrocardiac opacity is better aerated .
    OUTPUT:
    
Persistent appearance of moderate right pleural effusion and dependent atelectasis . Trace right apical pneumothorax .