Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Heart is top normal size , and mediastinal contour is unremarkable . Indentation of the trachea may relate to an enlarged thyroid gland . Lungs are clear . Pulmonary vasculature is within normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No evidence of cardiomegaly or pulmonary edema . 2 . Indentation of the trachea may relate to an enlarged thyroid gland and should be clinically correlated .