Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube terminates 4 .2 cm above the carina . An esophageal drain terminates in the mid portion of a non-distended stomach . An enteric feeding tube is likely post pyloric , tip is not included in this examination . Right IJ central venous catheter terminates in the low SVC . Lung volumes remain low and there is persistent retrocardiac and left lung base opacity likely related to atelectasis and pleural fluid . No large pneumothorax . No definite pulmonary edema .
    OUTPUT:
    
Persistent retrocardiac and left base opacity likely reflective of a combination of atelectasis and pleural effusion .