Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph provided . The lungs appear clear without focal consolidation , effusion or pneumothorax . Curvilinear calcification projecting over the heart likely corresponds with mitral annular calcification . The heart and mediastinal contour appear stable . No definite bony abnormalities are identified . High - riding left humeral head could indicate chronic left rotator cuff disease .
    OUTPUT:
    
No acute intrathoracic process .