Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacer device is noted with leads in unchanged positions in the right atrium and right ventricle . Severe cardiomegaly is unchanged . Mediastinal contours are similar with mild atherosclerotic calcifications noted at the aortic knob . There is mild pulmonary edema , new in the interval . Patchy opacities in the lung bases may reflect areas of atelectasis . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities detected . A screw is noted projecting over the left acromiohumeral interval . Chronic right first rib deformity is re - demonstrated .
    OUTPUT:
    
Mild pulmonary edema and bibasilar atelectasis .