Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest provided demonstrate interval removal of NG tube as well as the right IJ central venous catheter . Lung volumes are low , though allowing for this , no convincing signs of pneumonia or CHF . There is basilar mild subsegmental atelectasis . No effusion or pneumothorax is seen . Cardiomediastinal silhouette is stable . Degenerative changes in the thoracic spine appear chronic .
    OUTPUT:
    
Limited , with no convincing signs of pneumonia .