Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased density of the right lung base compared to the left , which may reflect a pneumonia versus difference in The heart size is normal . The mediastinal contours are normal . A displaced right clavicle fracture is again seen .
    OUTPUT:
    
1 . No pneumothorax . Right displaced clavicle fracture . 2 . Increased density over the right lung base compared to the left may reflect a pneumonia versus differences secondary to the patient 's right arm being down or breast tissue differences .