Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to study from ___ , the heart is mildly enlarged with left atrial enlargement . There are no pleural effusions or pneumothorax . Median sternotomy wires , mitral valve replacement , and left pectoral transvenous pacemaker device are unchanged in position . Mid thoracic vertebral body compression fracture grossly unchanged compared to prior study .
    OUTPUT:
    
Mild cardiomegaly . Mid thoracic vertebral body compression fracture grossly unchanged .