Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged presence of a right pectoral Port - A - Cath . Unchanged low lung volumes and mild cardiomegaly . Parenchymal opacity in both lower lobes , already visible on the CT examination from ___ , appear to have increased . They are now well appreciated on the lateral radiograph . In addition , a relatively important right basal plate - like atelectasis is seen . No pulmonary edema . No pneumothorax .
    OUTPUT:
    
The increasing extent of the pre-existing bilateral basal opacities , as compared to the CT examination from ___ could suggest the presence of infectious lung changes .