Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation or edema . There is no pleural effusion or pneumothorax . The aorta is calcified and mildly tortuous , similar to prior exam . The mediastinal contours are otherwise normal . The heart is moderately enlarged , and similar to the prior exam . A rounded sclerotic focus in the left humerus is noted , and likely a bone island .
    OUTPUT:
    
No acute cardiopulmonary process ; specifically , no evidence of pneumonia . Unchanged cardiomegaly .