Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are somewhat low . There is diffuse prominence of interstitial markings . There is no pneumothorax . The heart appears large although cardiac size may be exaggerated by AP technique . Mediastinal structures are otherwise unremarkable . The bony thorax is grossly intact .
    OUTPUT:
    
Diffuse prominence of interstitial markings that may represent edema . No focal consolidation .