Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube ends 3 .1 cm the carina . The right IJ CVC ends at the mid to low SVC . The enteric tube extends outside of the field of view within a nondistended stomach . Postsurgical changes are noted at the left upper lobe . The retrocardiac airspace opacity has increased compared with the prior study of ___ , and the right midlung airspace opacity is unchanged . There is probably a small left pleural effusion . There is no pneumothorax or pulmonary edema . The heart size is top - normal .
    OUTPUT:
    
1 . All lines and tubes in satisfactory position . 2 . Interval increase in retrocardiac airspace opacity . 3 . Stable right mid lung field airspace opacity .