Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new patchy opacity in the left lower lobe which partly obscures the left hemidiaphragm . Otherwise , extensive fibrosis appears unchanged . Evidence of prior wedge resection is again noted at the level of the lingula . There is no pneumothorax . Cardiac silhouette appears stable . Osseous structures are grossly unremarkable .
    OUTPUT:
    
1 ) New left lower lobe opacity suggestive of left lower lobe pneumonia . Followup CXR recommended in 4 weeks after therapy to ensure resolution . 2 ) Similar appearance of interstitial pulmonary fibrosis .