Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , allowing for technical differences , there has been little interval change . Again seen is background hyperinflation cardiomegaly , with upper zone redistribution and possible parenchymal scarring at the bases . Also again seen is left lower lobe collapse and / or consolidation , with a left pleural effusion , and obscuration of the left hemidiaphragm . No gross right effusion . Battery pack device is seen with leads extending cranially beyond the upper edge of these films . Clips again noted about the surrounding the trachea at the level of the thoracic inlet .
    OUTPUT:
    
Doubt overt CHF . Again seen is left lower lobe collapse and / or consolidation with associated small effusion .