畸胎瘤可发生在人体很多部位,如卵巢、骶尾部、腹膜后、睾丸、纵膈等。松果体先天性巨大畸胎瘤穿破鼻腔至颅外引起难产者极为罕见,到目前为止国内尚未见报道,最近作者在实践中见到一例,特报告如下。死婴为第二胎其母27岁工人,妊娠早期反应不明显,妊娠8个月早产,产程进 Teratoma can occur in many parts of the body, such as the ovary, sacrococcygeal, retroperitoneal, testicular, mediastinum and so on. Congenital giant teratoma congenital perforation of the nasal cavity to the extracranial cause of labor is extremely rare, so far has not been reported in the country, the author in practice to see a recent case, the special report is as follows. The dead baby is the second child whose mother is 27 years old. The reaction in early pregnancy is not obvious. The pregnant woman is premature at 8 months,