Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large air-fluid level seen in the left upper abdomen likely within the stomach with elevation of the left hemidiaphragm . Elevation of the left hemidiaphragm is chronic . There is left base atelectasis and likely pleural effusion . No pneumothorax is seen . The cardiac and mediastinal silhouettes are grossly unremarkable .
    OUTPUT:
    
Large air-fluid level in the stomach . Chronic elevation of the left hemidiaphragm . Small left pleural effusion .