Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes and body habitus obscure the lung bases bilaterally . Heart size appears enlarged , which is likely in part a function of portable technique and low lung volumes . There is no focal consolidation or pleural effusion . No pneumothorax . Osseous structures are intact .
    OUTPUT:
    
Low lung volumes , but no evidence of consolidation or pleural effusion .