Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates no focal consolidation , pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . There is mild prominence of the interstitium which may be technical ; however , the possibility of mild edema is difficult to exclude . There is evidence of old left humeral head injury . No acute skeletal abnormalities .
    OUTPUT:
    
Mild prominence of the interstitium may be technical ; however , the possibility of mild pulmonary edema can not be excluded . Recommend clinical correlation .