Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild - to - moderately enlarged with a left ventricular configuration . The mediastinal and hilar contours show a bulging contour along the left lower mediastinum posterior to the heart . This may be due to tortuosity or dilatation of the aorta . A hiatal hernia could also be considered .
    OUTPUT:
    
Cardiomegaly . Bulging contour along the left lower mediastinum , possibly due to tortuosity or dilatation of the aorta or possibly a hiatal hernia , which could also be considered . When clinically feasible , further evaluation with standard PA and lateral radiographs is suggested as initial further evaluation . No definite acute disease .