Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is rotated to the left and somewhat oblique in position . On the lateral view the patient 's arm overlies the upper chest . The above limits evaluation . Given this , rounded retrocardiac opacity may be due to hiatal hernia . Diffuse increased interstitial markings re - demonstrated bilaterally , likely due to chronic lung disease . Left base opacity is worrisome for infection or / and aspiration .
    OUTPUT:
    
Limited study . Left base opacity worrisome for infection and / or aspiration superimposed on chronic lung disease .