Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are again low , causing bronchovascular crowding . There is no focal consolidation or pneumothorax . There are small bilateral pleural effusions and mild pulmonary vascular congestion . Cardiomegaly is mild . There is mild bibasilar atelectasis , larger on the left . Imaged osseous structures are intact . Right humeral head screws are seen . Right central venous line tip is in the mid SVC .
    OUTPUT:
    
Right central venous line tip is in the mid SVC . No pneumothorax . Bibasilar opacities likely atelectasis are larger on the left