Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in bibasilar opacities . Pulmonary vasculature is stable no pulmonary edema . Mild cardiomegaly . No pneumothorax . Upper mediastinal contours are stable . Extensive pleural thickening is calcified and stable . Diaphragmatic calcifications are also seen . Crescentic air under the left hemidiaphragm can be related to recent abdominal surgery .
    OUTPUT:
    
Increasing bibasilar opacities may reflect a combination worsening atelectasis and aspiration pneumonia in the appropriate clinical setting . Left pneumoperitoneum attributed to recent abdominal surgery .