Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are unremarkable . Through the position of the bowel , lucency under the left hemidiaphragm could relate to colon and stomach , although it is difficult to exclude free air on this study . Recommend supine and upright views of the abdomen for further evaluation .
    OUTPUT:
    
1 . Clear lungs . 2 . Due to position of the bowel / stomach , lucency under the left hemidiaphragm is difficult to exclude free air . Recommend supine and upright views of the abdomen for further evaluation .