Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion , or pneumothorax . Mild left base atelectasis is seen . Cardiac and mediastinal silhouettes are stable . Aorta is mildly tortuous . No acute fractures are identified but bones appear diffusely demineralized . Mild degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
Mild left base atelectasis . Otherwise , no acute cardiopulmonary process .