Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP semi-upright view of the chest provided . Dialysis catheter is in unchanged position . AICD is in unchanged position . Midline sternotomy wires are again seen . The heart remains mildly enlarged . There are no definite signs of infection or pulmonary edema . Mediastinal contour appears stable . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly . Tubes in appropriate position . No overt edema or signs of pneumonia .