Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . No focal consolidation is seen . There is no pleural effusion or pneumothorax . Right - sided aortic arch is present . There is no pulmonary edema . Heart size is normal . Linear opacity involving left lung base likely represents atelectasis , and appears slightly less conspicuous from ___ exam .
    OUTPUT:
    
1 . No focal consolidation . Linear opacity involving left lung base is slightly less conspicuous from ___ exam , and likely represents atelectasis . 2 . Right - sided aortic arch .