Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are provided . Heart size is within normal limits and stable . There is a C - shaped calcification projecting over the left heart likely reflecting mitral annular calcifications . Mild hilar fullness is noted with subtle interstitial thickening which could reflect minimal pulmonary interstitial edema . No pleural effusion or pneumothorax is seen . There is a mild compression deformity involving a mid thoracic vertebral body , stable from prior exams .
    OUTPUT:
    
Mitral annular calcification , possible mild interstitial edema .