Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . Minimal linear opacity within the left lung base likely reflects subsegmental atelectasis . No focal consolidation , pleural effusion or pneumothorax is seen . A 4 mm nodular opacity within the left lung apex appears calcified , and likely reflects a granuloma . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .