Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Thoracic scoliosis is re- demonstrated . No focal consolidation is seen . No large pleural effusion is seen although a very trace pleural effusion be difficult to exclude . There is no pneumothorax . Biapical pleural thickening is re - demonstrated . The cardiac and mediastinal silhouettes are grossly stable .
    OUTPUT:
    
Difficult to exclude trace pleural effusion . Otherwise , no acute cardiopulmonary process .