Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two frontal images of the chest demonstrate low lung volumes , likely due to poor inspiration . There has been interval extubation and removal of an NG tube . The left subclavian line is unchanged . There is gaseous distention of the bowel in the abdominal left upper quadrant which is causing elevation of the left hemidiaphragm . There is increased retrocardiac atelectasis since prior imaging . The heart size is borderline for cardiomegaly . There is no pneumothorax or pleural effusion . Visualized osseous structures are unremarkable .
    OUTPUT:
    
New gaseous distention of the bowel in the left upper quadrant . Retrocardiac atelectasis . Otherwise unchanged chest radiograph .