Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there has been interval improvement in a left lower lobe opacity , however it has not completely resolved , with persistent asymmetric prominence of the left hila and an adjacent linear opacity . Again seen is hyperinflation with flattened diaphragms . no pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Interval improvement in left lower lobe pneumonia , however the opacity has not completely resolved . Recommend follow - up radiographs in 1 month to ensure resolution of opacity and exclude underlying malignant process in the left hilum .