Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left - sided pacemaker leads are in the right atrium and apex of the right ventricle respectively . There is mild cardiomegaly , stable compared to multiple exams dated back to ___ . No focal consolidations are identified . There is a small right pleural effusion . There is no pneumothorax .
    OUTPUT:
    
Left - sided pacer leads in expected position . No evidence of pneumothorax .