Abstract: Isolated fetal pleural effusion and ascites are rare in prenatal period，and are generally divided into two types：primary and secondary.The occurrence of primary fetal pleural effusion and ascites is mostly related to the abnormal development of lymphatic vessels，while the secondary causes are complicated and the prognosis is more diverse.This paper discusses the etiology，prenatal diagnosis，fetal medical consultation and management of isolated fetal pleural effusion and ascites.

Key words: fetal, pleural effusion, ascites, prenatal diagnosis

摘要： 孤立性的胎儿胸腔积液及腹腔积液均为产前罕见的胎儿疾病，一般分为原发性及继发性两种。原发性胎儿胸腔积液及腹腔积液的发生多与淋巴管发育异常相关，而继发性的病因复杂，预后也更为多样。文章针对孤立性的胎儿胸腔积液及腹腔积液的病因、产前诊断、胎儿医学咨询及处理进行了论述。

关键词: 胎儿, 胸腔积液, 腹腔积液, 产前诊断