Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Although better demonstrated on concurrent CT of the chest there is a moderate left pleural effusion significantly increased since the study of ___ . Heart is mildly enlarged . There are areas of scarring at the lung apices . Lung volumes are normal . The mediastinal and hilar structures are normal . There is no pneumothorax .
    OUTPUT:
    
Enlarging moderate left pleural effusion better seen on concurrent CT of the chest .