Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Hyperexpansion of the lungs is likely related to vigorous inspiration in this young patient . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . No acute osseous abnormality is identified . Bilateral symmetric 10 mm nodules projecting over the mid - to - lower lungs are likely nipple shadows .
    OUTPUT:
    
No pneumonia , effusion or edema .