Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is normal . A linear density projecting over the peripheral right upper lung and simulating a pneumothorax is likely external to the patient as normal lung markings cross this border .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .