The positive rates of the 4 tumor markers were all over 50% at admission and they were 82.6% for VMA,76.1% for NSE,63.0% for SF and 52.2% for LDH.

• 首次入院时4种肿瘤标志物阳性率均在50%25以上。 其中24h尿VMA阳性率最高；达82.；6%25;