Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is hyperinflation , suggesting background COPD . The the patient is status post sternotomy . The cardiomediastinal silhouette is unchanged . Valve replacements again noted . Linear opacities overlying the left lower heart are similar to prior could represent platelike atelectasis . No new focal opacity is identified . No CHF , no effusion . Calcified granuloma in the right upper lung again noted . Again noted is exaggerated thoracic kyphosis , with severe compression fracture of mid thoracic vertebral body , similar in configuration .
    OUTPUT:
    
No acute pulmonary process identified . Platelike opacities in left lung , similar to the prior film . No new opacity identified .