Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , lung volumes are slightly lower . Diffusely increased interstitial lung markings are again seen , compatible with known history of chronic interstitial lung disease . Evaluation of the ribs is limited by overlying structures , however there does not appear to be any evidence of acute rib fracture . Cardiomediastinal silhouette is unchanged since the prior study . No large effusion or pneumothorax . Degenerative changes of the glenohumeral and AC joints are similar . Similar appearance of the rightward deviated trachea .
    OUTPUT:
    
1 . Limited evaluation of the ribs due to overlying structures . However , no definite acute rib fracture detected . 2 . Re demonstration of diffusely increased interstitial lung markings , compatible with progression of known chronic interstitial lung disease . Again , in the appropriate clinical setting , this may also represent atypical infection or a component of interstitial edema .