Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Dialysis catheter is unchanged in position with tip in the low SVC . The heart size is top normal . There is no overt edema or pneumonia . No effusion or pneumothorax seen . The mediastinal contour is stable . Bony structures are intact , though an all deformity of the left mid shaft clavicle is again noted .
    OUTPUT:
    
Top normal heart size . Otherwise , unremarkable .