Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates the very low lung volumes , which results in bronchovascular crowding . There is increased density at the right lung base , which is consistent with lobar collapse and probable small pleural effusion . Assessment of the cardiac silhouette is difficult given the low lung volumes . No pneumothorax . A right - sided Port - A - Cath ends in the upper right atrium .
    OUTPUT:
    
Low lung volumes . Increased density in the right base is consistent with lobar collapse and probable small pleural effusion .