Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube ends 2 - 3 cm above the carina . The nasogastric tube ends in the stomach . There is a left retrocardiac opacity and small to moderate left pleural effusion . The right lung is clear . The aortic knob is calcified . There is mild cardiomegaly .
    OUTPUT:
    
1 . The endotracheal tube ends 2 - 3 cm above the carina . 2 . Left retrocardiac opacity in small to moderate left pleural effusion .