本文报告二例胎儿期畸胎瘤,一例良性畸胎瘤发生于腹腔,另一例恶性畸胎瘤发生于骶尾部,均为女胎,同时对发病原因结合病历进行了分析。例1 孕妇崔××,30岁。平素身体健康,24岁结婚,26岁因卵巢畸胎瘤,行左侧附件切除术。于1983年5月1日停经50天后出现选食、厌食、恶心、呕吐等妊娠反应,孕21周开始下肢浮肿,近两星期腹部突然胀大,日渐加重,不能平卧。同年10月20日晚(停经23周半),自然破水,量多,伴腹痛,急入县医院。次日自然分娩一女性死胎,体重862克(腹腔肿物在内),头部、四肢与同胎龄儿无区别,腹部胀大,腹围39cm。检查发现胎儿腹腔被肿物所充填,剖开腹腔,有淡黄色液体外溢,肿物柄蒂与后腹壁相连,子宫附件缺如,重296克。切开肿物有大量黄 This article reports two cases of fetal teratoma, one case of benign teratoma occurred in the abdominal cavity, another case of malignant teratoma occurred in the sacrococcygeal, are female fetuses, at the same time, the incidence of disease combined with medical records were analyzed. Example 1 pregnant women Cui × ×, 30 years old. Usually healthy, married at the age of 24, 26 years old due to ovarian teratoma, the left attachment resection. May 50, 1983 after menopause, 50 days after eating, anorexia, nausea, vomiting and other pregnancy reactions, 21 weeks pregnant began lower extremity edema, abrupt increase in the abdomen nearly two weeks, increasing, can not lie down. The same year the evening of October 20 (23-a-half-menopause), the natural water, quantity, with abdominal pain, urgency into the county hospital. The next day a natural childbirth stillbirth, weighing 862 grams (including abdominal mass), head, limbs and gestational age without distinction, abdominal swollen, abdominal circumference 39cm. Examination found that the fetal abdominal cavity was filled with tumor, cut open the abdominal cavity, a yellow liquid spill, tumor pedicle and the posterior abdominal wall connected, uterine attachment missing, weighing 296 grams. There are a lot of yellow cut the tumor