Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased interstitial markings with some irregularity , particularly left perihilar region , potentially due to a chronic underlying interstitial abnormality . Superimposed consolidation is identified in the right lower lobe worrisome for superimposed infection . Moderate cardiomegaly and median sternotomy wires are again noted . Degenerative changes seen at the left shoulder .
    OUTPUT:
    
Diffuse interstitial abnormality in the lungs , potentially chronic , with superimposed consolidation at the right lung base worrisome for infection .