Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is seen within the mid trachea 4 .5 cm above the level of the carinal in appropriate position . The lungs are hypoinflated . Right lung is clear . Persistent left lower lobe opacity . Slightly more rounded 2 .3 x 1 .7 cm opacity is seen in the left mid hemi thorax . Increased prominence of the aorta since ___ radiograph . Limited assessment of the upper abdomen is unremarkable .
    OUTPUT:
    
1 . Increased prominence of the aorta since ___ radiograph . 2 . Left lower lobe opacity represents combination of pleural effusion and left lower lobe collapse . Clinical correlation recommended to assess for superimposed infection . 3 . Hypoinflated lungs . 4 . 2 .3 opacity in the left mid lung is most likely a lung nodule . 5 . Endotracheal tube in appropriate position .