Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal views of the chest . The heart size is enlarged and appears slightly more prominent than on ___ , though this may be related to portable technique . Pulmonary vascular markings are indistinct and vague heterogeneous opacities are present in the right lower and , to a lesser extent , in the left lower lobes . A trace pleural effusion is not excluded . No pneumothorax . Leads of a left chest wall pacer terminate in stable position .
    OUTPUT:
    
Indistinct pulmonary vasculature with vague bibasilar heterogeneous opacities , consistent with mild pulmonary edema .