Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs are provided . The lungs are well expanded . There is no focal consolidation or pneumothorax . Blunting of the posterior costophrenic angles suggests small efusions . Elevated left hemidiaphragm is unchanged . Cardiomediastinal silhouette is unchanged . Upper abdomen is unremarkable . A rounded density projecting over the middle of the mediastinum is external to the patient .
    OUTPUT:
    
Small bilateral effusions . Otherwise , no acute cardiopulmonary process .