Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , there is a new or significantly increased small to moderate left effusion , with underlying left base collapse and / or consolidation . Small right effusion and patchy right base opacity is similar to the prior film . Overall CHF findings appear slightly worse , with increased vascular plethora and slight vascular blurring . Vague opacity in the right mid zone is similar to the prior film . The cardiomediastinal silhouette appears somewhat larger . While this may in part be accentuated by a TECHNIQUE , I suspect that there has been some interval cardiac enlargement . No obvious pneumothorax , but the possibility of a tiny right apical pneumothorax can not be entirely excluded .
    OUTPUT:
    
1 . New or significantly increased left effusion with underlying collapse and / or consolidation . 2 . Mild worsening of CHF findings . Possible slight interval cardiac enlargement . 3 . Persistent small right pleural effusion and right base atelectasis and right midzone opacity . 4 . No definite right apical pneumothorax . The possibility of a tiny right apical pneumothorax is considered unlikely , but can not be entirely excluded .