临床诊断的食管-胃癌患者大多死于转移性疾病,在接受治疗前大多数患者已发生远处转移。故应在治疗前准确地评估隐性转移灶的情况。以往多通过髂嵴骨髓穿刺抽吸骨髓进行检查。而髂嵴穿刺抽吸所得的骨髓易被外周血 Most patients with clinically diagnosed esophageal-gastric cancer died of metastatic disease. Most patients had distant metastases before receiving treatment. Therefore, the status of latent metastases should be accurately assessed before treatment. In the past, bone marrow aspiration was used to aspirate bone marrow for examination. The bone marrow obtained by puncture and puncture is easy to be peripheral blood