Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity in the left lingula is consistent with lingular pneumonia . Blunting of the left costophrenic angle is also new , consistent with small left pleural effusion . The right lung is clear . No pneumothorax . No edema . The heart is probably top - normal in size , unchanged . Surgical clips in the right upper abdomen suggest history of cholecystectomy . There is multilevel degenerative changes in the visualized thoracic spine and suggestion of diffuse idiopathic skeletal hyperostosis in the upper thoracic spine .
    OUTPUT:
    
1 . Left lingular pneumonia . Follow - up chest radiograph after treatment to ensure resolution . 2 . Small left pleural effusion .