Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is slightly rotated . Right - sided dual lumen central venous catheter tip terminates in the right atrium . Left - sided pacer device is noted with single lead terminating in the right ventricle . Mild enlargement of the cardiac silhouette is similar . The aorta is diffusely calcified . Mediastinal and hilar contours are grossly unremarkable . No pulmonary edema is detected . Streaky opacities in the lung bases may reflect areas of atelectasis and scarring . Blunting of the costophrenic angles bilaterally is unchanged , which may reflect chronic pleural thickening . No large pleural effusion or pneumothorax is identified . Remote fracture deformity of the right proximal humerus is noted . Diffuse demineralization of the osseous structures is present .
    OUTPUT:
    
Bibasilar streaky opacities , likely atelectasis and scarring . No pulmonary edema or large pleural effusion .