一病例摘要患者女,20岁,因停经17周余,下腹痛半天,先兆流产于2010年2月1日入院。患者14岁月经初潮,周期28~30d,经期5~7d,末次月经2009年10月23日。孕1产0。患者无明显诱因出现下腹部疼痛,伴少量阴道出血,休息无明显好转。入院后超声提示:胎儿双顶径28mm,头臀径83mm,胎儿头颅内见8mm×6mm暗区。 A case summary of female patients, 20 years of age, more than 17 weeks after menopause, lower abdominal pain for a long time, threatened abortion on February 1, 2010 admission. Patients 14 years of menarche, period 28 ~ 30d, menstrual 5 ~ 7d, the last menstruation October 23, 2009. Pregnancy 1 production 0. No obvious incentive for patients with lower abdominal pain, with a small amount of vaginal bleeding, no significant improvement in rest. Ultrasonic prompts after admission: fetus biparietal diameter 28mm, head hip diameter 83mm, fetus see 8mm × 6mm dark area.