Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph demonstrates a vague opacification projecting over the lingula in the region of the previously noted mass . Finding is likely a combination of residual mass and a small , not unexpected hemorrhage . No pneumothorax identified . Cardiomediastinal and hilar contours are unremarkable . Minimal atelectatic changes are noted in the right lung base . No osseous abnormality evident .
    OUTPUT:
    
No pneumothorax . Faint opacification over lingula is combination of residual mass and small amount of unexpected postoperative hemorrhage .