Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged . Tiny right apical pneumothorax is unchanged . There is no shift of mediastinal structures . As seen previously , patchy ill - defined opacity in the left lower lobe is re - demonstrated , potentially reflective of pneumonia . Right lung is clear . Minimal blunting of the costophrenic sulcus on the right suggests a trace pleural effusion . Fracture of the right eighth lateral rib is re - demonstrated with associated pleural thickening .
    OUTPUT:
    
1 . Unchanged right apical pneumothorax . 2 . Mild right pleural thickening and pleural effusion with right eighth rib fracture , as seen previously . 3 . Unchanged left lower lobe patchy opacity concerning for pneumonia in the correct clinical setting . Follow up radiographs after treatment are recommended to ensure resolution of this finding .