Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is detected . Heart and mediastinal contours are stable . Vascular calcifications are again noted . Sternal wires are in similar positions . Radiopaque gallstones project over the right upper quadrant .
    OUTPUT:
    
Stable chest radiograph without evidence for pneumonia .