Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of consolidation . Increased interstitial markings are seen in the lungs , particularly at the bases . This could be due to chronic underlying interstitial process . There is no focal consolidation or effusion . The cardiomediastinal silhouette is within normal limits . Mitral annular calcifications are seen . No acute osseous abnormalities identified . Degenerative changes noted at the right shoulder .
    OUTPUT:
    
Increased interstitial markings which could be due to chronic underlying interstitial process . No focal consolidation worrisome for pneumonia .