Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevated left hilus with adjacent focal opacity . There is a moderate left pleural effusion . The aortic knob is calcified . There is mild cardiomegaly . No pneumothorax is identified . There are breast calcifications . Compression fractures and prior vertebroplasty are seen on the prior radiographs of the thoracic spine performed 12 hours earlier .
    OUTPUT:
    
Left pleural effusion . Chronically elevated hilus with adjacent lymph nodes or mass . Further evaluation with comparison to prior studies . If non are available dedicated chest CT is recommended .