Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear without confluent consolidation . There is no pulmonary edema or pleural effusions . Flattening of the hemidiaphragms is unchanged and consistent with chronic obstructive pulmonary disease . Mild cardiomegaly is also stable . Mediastinal and hilar contours are within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process