Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with no evidence of a consolidation , effusion , or pneumothorax . A circular density is noted at the right hilum and nonspecific but possibly representative of confluence of vessels . Cardiomediastinal silhouette is stable . Median sternotomy wires appear intact . There is no free air noted under the hemidiaphragms .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Rounded opacity in the right hilum and possibly representative of a confluence of pulmonary vascular markings . However , dedicated PA and lateral chest radiographs are recommended for further evaluation .