起源于腹膜后间隙内且在该区域主要脏器之外的腹膜后囊性肿块并不常见,但是随着CT在评价腹部及腹膜后病变方面的广泛应用,提高了腹膜后囊性病变的检出率。由于腹膜后囊性肿块发生的原因不同,其临床表现及治疗措施也各异,故对肿块之间显示出来的不同特征进行区分非常重要。由于? Retroperitoneal cystic masses that originate in the retroperitoneal space and are outside of the major organs in this area are uncommon but with the widespread use of CT in the evaluation of abdominal and retroperitoneal pathologies, retroperitoneal cystic lesions are improved Rate out. Due to the different causes of retroperitoneal cystic mass, its clinical manifestations and treatment measures are also different, it is important to distinguish between the different characteristics of the tumor showed. due to?