We analyzed the clinical pathological characteristics of a case of intraplacental choriocarcinoma in a term placenta with maternal and infant metastases and reviewed the literature.
对一例足月妊娠胎盘内绒毛膜癌合并母婴转移的病例进行临床病理分析，并复习相关文献。
2
Placenta previa, premature rupture of fetal membrane (PROM), multiple pregnancy and maternal chronic hypertension are the main rlated factors of premature delivery;
新生儿窒息的危险因素有胎儿宫内发育迟缓，母亲孕期并发妊高征和胎儿窘迫。
3
This article discusses the causes of placenta previa, harm, termination of pregnancy, bleeding after the treatment, mainly to reduce maternal and infant mortality.