Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and mediastinal clips are noted . Right humeral head prosthesis noted . Chronic deformity the left shoulder noted . Lungs are clear without focal consolidation , large effusion pneumothorax . The heart size is normal . The aorta is markedly unfolded and appears a ectatic and partially calcified . No definite pneumothorax or effusion .
    OUTPUT:
    
No convincing evidence for pneumonia or edema .