Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate - sized left pleural effusion has increased in size and is associated with adjacent atelectasis and / or consolidation at the left base as well as elevation of the left hemidiaphragm . Cardiomediastinal contours are slightly shifted towards the right . On the right , linear atelectasis at the right lung base has improved , and a small pleural effusion persists . An air - fluid level at the region of the left thoracoabdominal junction may be within the stomach , but a gas - containing pseudocyst adjacent to the stomach could produce a similar appearance .
    OUTPUT:
    
Interval increase in size of moderate left pleural effusion with adjacent atelectasis and / or consolidation . Air-fluid level at the left thoracoabdominal junction may be in the stomach or could reflect a pancreatic pseudocyst adjacent to the stomach given history of this entity . Consider CT for further evaluation .