Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs continue to be under inflated without pneumothorax , pulmonary edema or pleural effusion . The cardiac and mediastinal contours are normal . Bilateral degenerative changes of the glenohumeral joints continue to be seen . A new left mid lung opacity is seen when compared to the most recent chest radiograph . Retrocardiac opacities likely represent atelectasis .
    OUTPUT:
    
New left mid lung opacity may represent atelectasis or developing pneumonia . Recommend PA & lateral chest radiograph or short - term imaging for further assessment .