Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new left pectoral pacemaker is seen with transvenous leads in the right atrium , right ventricle , and in the coronary sinus , which is slightly more proximally placed than usual . The lungs are clear . Mild cardiomegaly persists . No pneumothorax , pleural effusion , pulmonary edema , or pneumonia .
    OUTPUT:
    
1 . New left pectoral pacemaker with transvenous leads in the RA , RV , and in the coronary sinus . No pneumothorax .