Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show new left pectoral pacemaker with two leads following the expected course and ending in right atrium and right ventricle respectively . Lung volume is moderate with stable left lung base opacity due to atelectasis and small pleural effusion . Heart size is still top normal . There is no pneumothorax .
    OUTPUT:
    
Correct positioning of new left pectoral pacemaker with two leads following the expected course to right atrium and right ventricle . Stable left pleural effusion and left lower lobe atelectasis .