Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal upright and lateral chest radiographs were obtained . Low lung volumes are unchanged . Sternotomy wires , surgical clips and and prosthetic aortic valve are again noted and remain unchanged . Lungs are clear without focal areas of consolidation . There is no pleural effusion and no pneumothorax . Note is made of an old right ribcage deformity .
    OUTPUT:
    
No evidence of pneumonia .