Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant change since at least ___ . Lungs are well - expanded and clear . No focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . Stable and unremarkable cardiomediastinal silhouette , hila , and pleura .
    OUTPUT:
    
No acute cardiopulmonary process including no pneumonia .