Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate substantial increase in rightward tracheal deviation and mediastinal widening since ___ , concerning for enlarged aorta with or without hematoma or dissection . Patient has a history of aortic graft placement as demonstrated on the CT Torso dated ___ . With this information , the aforementioned findings raises the concern for possible endograft leak , dissection , or aneurysm . Moderate bilateral pleural effusion and severe , basal atelectasis , new since ___ are worse since earlier in the day . There is no focal consolidation or pulmonary edema , and no pneumothorax .
    OUTPUT:
    
Severe enlargement of thoracic aorta could be due to aneurysm , contained perforation , and / or dissection . A chest CT with contrast enhancement is recommended , asdiscussed with Dr . ___ by Dr . ___ ___ telephone at 13 :45 on ___ immediately upon review of the radiographs .