Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dialysis catheter has been removed . The cardiac , mediastinal and hilar contours appear stable . A mild interstitial abnormality is consistent with mild pulmonary edema . There is no definite pleural effusion or pneumothorax . Irregularity is probably unchanged along the left humeral head ; this appearance could be due to degenerative change but possibly avascular necrosis . The right humeral head is unremarkable .
    OUTPUT:
    
Findings suggest mild pulmonary edema .