Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . Heart size remains moderately enlarged . The aorta is tortuous . Low lung volumes are present . There is crowding of bronchovascular structures with mild pulmonary vascular engorgement . Patchy atelectasis is seen in the lung bases . No focal consolidation , pleural effusion or pneumothorax is identified . Thoracolumbar fusion hardware is incompletely imaged . Osseous structures are diffusely demineralized . Remote fractures of the right - sided ribs are noted . Extensive degenerative changes of both glenohumeral joints are re - demonstrated .
    OUTPUT:
    
Mild pulmonary vascular congestion and bibasilar atelectasis .