Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left subclavian Port - A - Cath is seen with its tip in the mid to low SVC . Cardiomediastinal silhouette is stable . There is increased reticular opacity within the lungs most prominent in the right upper lung , possibly reflecting worsening fibrosis . Difficult to exclude a subtle superimposed pneumonia . No large effusion or pneumothorax . Imaged bony structures are intact . A CBD metallic stent projects over the upper abdomen .
    OUTPUT:
    
Fibrotic changes in the lungs , appear increased in conspicuity from prior chest radiograph , may reflect worsening fibrosis versus superimposed atypical pneumonia .