Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes which account for bibasilar atelectasis as well as crowding of the bronchovascular structures and mild cardiomegaly . There is a very tortuous aorta with calcifications of the aortic knob . There is no evidence of pneumothorax , pneumonia , pulmonary edema or pleural effusions . An upper lumbar compression fracture is evident , but age indeterminate .
    OUTPUT:
    
Given low lung volumes , no evidence of acute cardiopulmonary process .