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 right ventricle , unchanged . Heart size remains mildly enlarged . The mediastinal and hilar contours are unchanged with prominence of the main pulmonary artery , possibly suggestive of pulmonary arterial hypertension . Linear opacity within the right lung base likely reflects an area of subsegmental atelectasis . Small bilateral pleural effusions are new in the interval . Minimal bibasilar streaky opacities may reflect atelectasis . No pneumothorax is demonstrated . There are no acute osseous abnormalities . Compression deformity at the thoracolumbar junction appears compared to the prior lumbar spine radiographs from ___ .
    OUTPUT:
    
Small bilateral pleural effusions and streaky bibasilar opacities , likely atelectasis . Infection in the left lung base is not completely excluded .