Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is unchanged from ___ with mild tortuosity of the thoracic aorta . Mediastinal and hilar contours are unremarkable . There is no pulmonary vascular congestion or interstitial edema . Lung volumes are low but are otherwise clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
Mild cardiomegaly unchanged from ___ without fluid overload .