Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual - lead pacemaker / ICD device appears unchanged with leads again terminating in the right atrium and ventricle , respectively . The lung volumes are low . Allowing for that , the cardiac , mediastinal and hilar contours are probably unchanged . On the right , the lungs appear clear without pleural effusion . On the left there is patchy opacification in the lingula and left lower lobe but no pleural effusion . There is no pneumothorax . Mild degenerative changes affect the mid through lower lumbar spine .
    OUTPUT:
    
Opacities at the left lung base which may be seen with pneumonia in the appropriate setting . Correlation with clinical presentation is suggested . Areas of atelectasis could have a similar appearance .