Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is mildly tortuous . Mediastinal and hilar contours are otherwise unremarkable . Subsegmental atelectasis is noted in the left lung base . No focal consolidation , pleural effusion or pneumothorax is identified . Known pulmonary nodules are better assessed on the previous CT . No acute osseous abnormalities detected . Sclerotic metastases are also visualized better on the prior CT .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Known pulmonary nodules and osseous metastases are better assessed on the prior CT .