Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate mild cardiomegaly and unchanged rightward deviation of the trachea by the aortic arch . The well - aerated lungs are clear without focal consolidation or pulmonary edema . There is no pleural effusion or pneumothorax . Again seen is a large hiatal hernia .
    OUTPUT:
    
1 . The lungs are clear without focal consolidation or pulmonary edema . 2 . Unchanged mild cardiomegaly and a large hiatal hernia . A preliminary read was provided by Dr . ___ to Dr . ___ at ___ on ___ .