Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , a previously seen oval opacity in the mid left lung is no longer visualized . The lungs are clear without focal consolidation . There is chronic fibrosis of the left left lower lung . There are post radiation changes in the right upper lobe . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
No pneumonia , pleural effusion , or evidence of progression of intrathoracic metastatic disease .