Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Calcified right hilar lymph nodes are again noted compatible with prior granulomatous disease . Pulmonary vasculature is normal . Small left pleural effusion is similar in size compared to the previous radiograph . There is minimal left basilar pleural thickening as well . Lungs are clear without focal consolidation . Apical scarring is again noted bilaterally . No pneumothorax is present . There are mild degenerative changes noted in the mid thoracic spine . No subdiaphragmatic free air is present .
    OUTPUT:
    
Similar appearance of small left pleural effusion . No subdiaphragmatic free air identified .