Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are low in volume but clear . There is no pleural effusion or pneumothorax . A left subclavian Port - A - Cath is seen terminating in the superior cavoatrial junction . Heart is top normal in size and normal cardiomediastinal silhouette . Slight leftward deviation of the trachea is stable and perhaps due to thyroid enlargement .
    OUTPUT:
    
No acute intrathoracic process .