Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lumen central venous catheter tip terminates in the proximal right atrium . Lung volumes are low . Heart size remains mild to moderately enlarged . The aorta is tortuous . Mild pulmonary edema persists with unchanged mediastinal and hilar contours . Linear opacities in the lung bases likely reflect areas of atelectasis . No large pleural effusion or pneumothorax is present , though assessment of the lung apices is obscured by the patient 's chin and soft tissues of the neck projecting over these areas . Remote fracture of the left posterior fifth rib is re - demonstrated .
    OUTPUT:
    
Mild pulmonary edema and bibasilar atelectasis .