Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrates no focal opacity convincing for pneumonia . Compared to prior study dated ___ , overall appearance of the chest is not significantly changed . Cardiomediastinal and hilar contours are stable , the heart appears mildly enlarged . Prominence of the mediastinum is stable . Blunting of the left costophrenic angle is likely secondary to pleural thickening . Streaky atelectasis is seen in the left lung base with unchanged mild elevation of the left hemidiaphragm . No focal consolidation is present . No large pleural effusion , pneumothorax or evidence of pulmonary edema .
    OUTPUT:
    
No focal opacity convincing for pneumonia .