Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size with a left ventricular configuration . There is mild unfolding and calcification along the aortic arch . There is no pleural effusion or pneumothorax . Projecting in the right infrahilar region is a nodular opacity measuring about 15 mm in diameter . Although it may represent a confluence of vascular shadows or perhaps pneumonia in the appropriate setting , the possibility of a lung nodule should be considered . The opacity is not visualized on the lateral view . Otherwise the lungs appear clear . Surgical clips project along the right upper quadrant . Small osteophytes are noted along the thoracic spine .
    OUTPUT:
    
Right infrahilar opacification with nodular appearance . In the appropriate clinical setting , differential considerations include pneumonia , but a lung nodule should be considered and either a follow - up radiograph should be obtained in the short term after treatment if pneumonia is suspected or chest CT should be considered . Comparison to prior radiographs , if available , could also be useful . Findings and recommendations discussed with Dr . ___ by telephone while the patient was still in the emergency room .