Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy left mid lung lower opacities are best seen on the frontal view . Heart size is top normal , slightly enlarged from ___ . There is no pleural effusion or pneumothorax . Sternotomy wires and CABG clips are again noted . Small bowel appears minimally distended . Hypodensities overlying the area of the gallbladder may represent cholelithiasis .
    OUTPUT:
    
1 . Patchy mid left lung lower opacities could be pneumonia in the correct clinical setting , otherwise , may represent atelectasis . 2 . Cholelithiasis . 3 . Slight small bowel distension .