Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , AP and lateral . Low lung volume causes crowding of the pulmonary vasculature . There is bilateral lower lobe atelectasis but the lungs are otherwise clear . Moderate cardiomegaly is unchanged given technique . There is central pulmonary vascular engorgement but no edema . There is no pneumothorax or large pleural effusion . Rightward tracheal deviation is chronic and likely secondary to an enlarged thyroid gland .
    OUTPUT:
    
Cardiomegaly with pulmonary vascular engorgement but no frank edema . No evidence of pneumonia .