Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated with flattening of the diaphragms . Heart size is normal . Aortic knob calcifications are present . Mediastinal contour is unremarkable . There is mild perihilar haziness and vascular indistinctness compatible with mild pulmonary edema . No focal consolidation , pleural effusion or pneumothorax is demonstrated . 7 mm nodular opacity within the left apex appears new in the interval . Hypertrophic changes are demonstrated within the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema . 7 mm nodular opacity projecting over the left apex , not clearly demonstrated on the previous exams . This can be further assessed with a chest CT on a nonemergent basis .