Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is normal . There is minimal blunting of the left costophrenic sulcus posteriorly .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Possible trace left pleural effusion versus focal pleural thickening .