Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pleural effusion , pulmonary edema , or pneumothorax . Low lung volumes with resultant crowding of bronchovascular structures . Note is also made of bibasilar subsegmental atelectasis and or scarring . Multilevel compression fractures of the lower third of thoracic spine are similar to the prior CT . A right pectoral Port - A - Cath catheter tip terminates at the cavoatrial junction .
    OUTPUT:
    
Low lung volumes . No definite acute cardiopulmonary process .