Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates heterogeneous opacities in the bilateral lungs , which may represent pulmonary edema in the setting of pulmonary fibrosis and emphysema . Overall , the appearance is unchanged from the prior study . Tracheostomy tube is in place . Heart size is normal . A small pleural effusion is again seen on the right side . Right - sided pectoral Port - A - Cath ends in the proximal right atrium .
    OUTPUT:
    
Stable appearance of heterogeneous opacities in the bilateral lungs , likely representing a combination of pulmonary edema in the setting of pulmonary fibrosis and emphysema .