Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left pectoral generator with 2 leads in the right atrium and right ventricle . Mild degenerative changes of the thoracic spine with osteophyte formation . The lung volumes are normal . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . No pneumonia , no pulmonary edema . No pleural effusions .
    OUTPUT:
    
Dual lead left pectoral and subclavian pacemaker with 2 pacer leads in the right atrium and the right ventricle without evidence of pneumothorax or other complications . Mild degenerative changes in thoracic spine .