目的 探讨联体寄生胎的临床特征及治疗.方法 介绍3例联体寄生胎的临床资料,其中内寄生胎2例和外寄生胎1例,均行手术治疗.同时结合相关文献进行分析.结果 1例外寄生胎明确诊断,2例内寄生胎术前均误诊畸胎瘤.3例均治愈,术后经1～3年随访小儿发育良好,1例合并脐膨出经保守治疗,逐渐缩小愈合.结论 联体寄生胎临床罕见,外寄生胎容易识别,内寄生胎应与畸胎瘤鉴别,术前X线检查见椎骨、术中见成熟的器官系统即可确诊.内寄生胎常因腹部肿块剖腹探查,手术完整切除,预后良好.%Objective To explore the clinical features and surgical therapy of conjoined parasitic twin ( CPT ). Me thods The clinical data of 3 cases with CPT, including 2 cases of fetus in fetus ( FIF ) and 1 case of heteropagus twin ( HT ). All of them were received operation. Related literature were reviewed. Results Besides HT; both patients with FIF were misdiagnosed as teratoma before the operation. The operations were successful in all of the 3 patients. None of them reoccurred in the 1 to 3 years follow up. 1 patient with omphalocele was treated with conservative measures. Conclusion CPT is rare in clinic. The diagnosis of HT is easy. It is important to differentiate teratoma in diagnosis of FIF. FIF can be distinguished by routine X-ray examination which showing vertebral axis and during operation findings of mature organ. The patients with FIF undergo operation frequently because of abdominal mass. The lesion can be removed completely in the operation and patients have good prognosis.
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