Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates a low lung volumes . The cardiac silhouette is enlarged . The pulmonary vasculature is centrally contrasted , without definite overt edema . A sizable right pleural effusion remains present , with associated compressive atelectasis . Consolidation is not excluded . An AICD is in stable position .
    OUTPUT:
    
Overall similar examination to prior comparisons .