Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-supine frontal view of the chest . A right internal jugular line ends in the mid SVC . The endotracheal tube terminates 3 .5 cm above the carina . A transesophageal tube terminates in the stomach . There is right lower lobe atelectasis and a left retrocardiac opacity that appears unchanged since ___ . No large pleural effusions or pneumothorax . Mild cardiomegaly is uncahnged since ___ .
    OUTPUT:
    
Lines and tubes in appropriate position . Right lower lobe atelectasis . Retrocardiac opacity could represent pneumonia , aspiration or atelectasis .