Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest provided . AICD is in unchanged position with lead tips extending into the right atrium and right ventricle . Patient is rotated to her left . Multiple mediastinal clips are noted . The lungs are clear . There is a known left lower lobe posterior basal mass - like consolidation as seen on prior CT of the chest from ___ and ___ which likely accounts for the posterior opacity on the lateral view . A tiny right pleural effusion is difficult to exclude . No pneumothorax is seen . No definite bony abnormality . A chronic - appearing deformity of the right shoulder likely reflects old injury .
    OUTPUT:
    
Stable left lower lobe opacity likely reflects known mass lesion in this region . Possible tiny right effusion .