Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . The patient remains intubated , the ETT in unchanged appropriate position . NG line and right - sided internal jugular approach central venous line unchanged . No pneumothorax . The previously described bilateral patchy heterogeneous parenchymal infiltrates have further decreased and present now with a few patchy confluenting infiltrates in the lung bases . No new parenchymal abnormalities are identified , and the lateral pleural sinuses remain free from any major fluid accumulation .
    OUTPUT:
    
Further improvement of previously identified parenchymal pulmonary infiltrates .