Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . No focal consolidation or pleural effusion , no evidence of pneumothorax is seen . There is equivocal minimal interstitial edema . The cardiac silhouette is top normal to mildly enlarged . Mediastinal and hilar contours are unremarkable . Partially imaged is what appears to be a possible degenerative change at the right humeral head , although not well assessed .
    OUTPUT:
    
1 . No focal consolidation seen . Possible minimal interstitial edema . 2 . Partially imaged irregularity at the right humeral head may reflect degenerative change or prior trauma .