Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the immediate prior radiographs , a small to moderate right apical hydropneumothorax is unchanged , and right lower lobe opacity appears slightly improved , with a persistent moderate right pleural effusion . Moderate interstitial pulmonary edema is unchanged , and improvement at the right base likely represents resolving atelectasis . Cardiomegaly is unchanged .
    OUTPUT:
    
1 . Unchanged right apical hydropneumothorax , moderate cardiomegaly , and moderate interstitial pulmonary edema . 2 . Slight improvement in right base atelectasis .