Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Relatively low lung volumes are noted . Increased interstitial markings are again seen throughout the lungs , although somewhat increased since prior . There is no large effusion . Cardiomediastinal silhouette is stable . Left shoulder hemiarthroplasty is again noted . Surgical clips seen in the upper abdomen . Calcific densities projecting over the right scapula are likely intra-articular bodies , similar to prior .
    OUTPUT:
    
Low lung volumes with increased interstitial markings , some of which is chronic , although the degree of which is increased since prior and could represent superimposed edema or infection .