Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . Examination is limited by exaggerated thoracic kyphosis and rotation . Cardiac mediastinal silhouette is unchanged in appearance compared to the prior study . Blunting of the right costophrenic angle could be positional , but a small effusion is possible . There are no focal areas of consolidation . Pulmonary vascular engorgement and possible mild pulmonary edema noted . No large pleural effusion or pneumothorax .
    OUTPUT:
    
No significant changes compared to the prior studies .