Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were obtained . Previously noted pleural effusions have cleared and there is improved aeration in the lower lungs . No focal consolidation , effusion , or pneumothorax is seen . Signs of CHF . Heart and mediastinal contours appear normal . Bony structures are intact .
    OUTPUT:
    
No acute intrathoracic process .