Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . Tracheostomy stent is visualized . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The hilar contours are stable . Cardiac and mediastinal silhouettes are stable . The chronic compression fracture of 1 of the mid to lower thoracic vertebral bodies is again seen , grossly unchanged from most recent comparison study .
    OUTPUT:
    
No acute intrathoracic process .