患者女,25岁,以继发性闭经2年半,自觉胎动4月余,阵发性腹坠痛6小时,于1999年11月10日收住院。患者既往月经周期不规律17(2-3)/(30-60)天。经血量少,否认痛经史。LMP1997年3月,之后月经未复潮。1998年5月结婚,婚后有正常性生活,未避孕。无明显早孕反应,自觉胎动1月余。并感下腹增大时于1999年6月曾来院检查。B超检查:中孕,胎儿双顶径 Female patient, 25 years old, with secondary amenorrhea for 2 years and a half, conscious fetal movement more than 4 months, paroxysmal abdominal pain for 6 hours, on November 10, 1999 admitted to hospital. Patients with irregular menstrual cycle in the past 17 (2-3) / (30-60) days. Less blood, denied the history of dysmenorrhea. LMP 1997 March, after menstruation has not resurfaced. May 1998 Married, normal sex after marriage, no contraception. No significant response to early pregnancy, conscious fetal movement more than 1 month. And felt the abdomen increases when in June 1999 had to hospital inspection. B-ultrasound: in pregnancy, fetal biparietal diameter