Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pacemaker with 2 leads is seen in appropriate position . Heart size is top normal . The aorta is tortuous . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . A subtle , equivocal retrocardiac opacity projected over the thoracic vertebral bodies is seen and may represent an area of infection . No pleural effusion or pneumothorax is seen . Of note , there appears to be some vertebral body sclerosis , not appreciated on the prior examination .
    OUTPUT:
    
Equivocal , retrocardiac opacity seen and in the appropriate clinical setting could represent pneumonia . Possible thoracic vertebral body sclerosis , not appreciated on the prior examination . Oblique views could be obtained for better evaluation of the possible pneumonia and the thoracic spine .