Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The NG tube has been removed . There is longstanding left lower lobe collapse , unchanged from prior . The pulmonary vasculatures are normal . The hila are normal . There is right pleural effusion . The heart size is difficult to assess due to longstanding atelectasis and decreased lung volume . No pneumothorax . The mediastinum is normal . There is severe scoliosis . No fractures .
    OUTPUT:
    
1 . No pneumonia . 2 . Longstanding left lower lobe atelectasis , unchanged from prior .